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| Institutions and Information Systems | - ELETRA, Brazilian Company
Manufactures buses with electric traction - technology that combines conventional diesel engines with electricity generated by its own movement - start running abroad. After investing 3 years in the idea of a vehicle with low polluting gas emissions, Eletra, in Sao Bernardo do Campo (SP) has started to sign contracts to supply its hybrid bus.
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| Infopool Documents |   Policies and instruments- Dialogues and consultation processes
- 1. Breathing Clean: Considering the Switch to Natural Gas Buses
In response to emerging epidemiological evidence of the toxicity of diesel vehicular emissions, there is growing interest in substituting conventional diesel with much cleaner natural gas in cities where ambient concentrations of particulate matter are markedly higher than what is internationally considered acceptable. - 4. Breathing Clean: Considering the Switch to Natural Gas Buses
In response to emerging epidemiological evidence of the toxicity of diesel vehicular emissions, there is growing interest in substituting conventional diesel with much cleaner natural gas in cities where ambient concentrations of particulate matter are markedly higher than what is internationally considered acceptable. - Urban Air Pollution - How Can Urban Bus Policy Reduce Air Pollution?
Buses are essential to everyday life in South Asia. They affect urban air quality both directly by emitting air pollutants and indirectly by reducing the congestion and emissions caused by the many smaller vehicles which they replace.
- Government initiatives and regulations
- Mobile sources
- The natural gas bus
- Cleaner vehicles
- 4. Analysis of Alternative Fuel Technologies for New York City Transit Buses
- Developments in U.S. Alternative Fuel Markets
The Energy Information Administration - New vehicles
- The natural gas bus
- 4. Analysis of Alternative Fuel Technologies for New York City Transit Buses
- Developments in U.S. Alternative Fuel Markets
The Energy Information Administration - 1. Emission Control Retrofit of Diesel-Fueled Vehicles
MECA has received numerous inquiries regarding the possibility of retrofitting emission control technologies on existing diesel engines. These inquiries have included requests for technical information, past experience with retrofit, and information on the impact of fuel sulfur on emission control retrofit technologies. - 10. Sustainable Transport: New Insights From the IEAs Worldwide Transit Study
Over the past year, the IEA has undertaken a study of transit systems in cities around the world. The primary focus has been on bus systems in developing countries, where dilapidated vehicles, old technologies, and rapidly increasing traffic congestion and sprawl are jeopardising the ability of the developing world s premier cities to achieve sustainability. - 12. Retrofit Diesel Particulate Filter Application Considerations and Experience
Key Considerations of a Diesel Particulate Filter Retrofit Control Program, Operating Experience with Retrofit Diesel Particulate Filters, Discussion of Diesel Particulate Filter, Applications Matrix - 7. Sustainable Transport: New Insights From the IEAs Worldwide Transit Study
Over the past year, the IEA has undertaken a study of transit systems in cities around the world. The primary focus has been on bus systems in developing countries, where dilapidated vehicles, old technologies, and rapidly increasing traffic congestion and sprawl are jeopardising the ability of the developing world s premier cities to achieve sustainability. - 8. Retrofit Diesel Particulate Filter Application Considerations and Experience
Key Considerations of a Diesel Particulate Filter Retrofit Control Program, Operating Experience with Retrofit Diesel Particulate Filters, Discussion of Diesel Particulate Filter, Applications Matrix - Global Trends in Diesel Emission Control - A 1999 Update
Driven in part by concerns regarding global warming, there is a clear trend toward increased sales of light duty diesel vehicles in many parts of the world (...) - New Buses
This section outlines the many technical options and fuels available which have the potential to reduce the environmental impacts of new buses. - New Buses Overview
All of the technologies listed in this section have different characteristics in terms of energy efficiency, life-cycle and tailpipe emissions (see table below). - Conventional heavy duty diesels
- w1. Developments in U.S. Alternative Fuel Markets
The Energy Information Administration - w2. Developments in U.S. Alternative Fuel Markets
The Energy Information Administration - 1. Emission Control Retrofit of Diesel-Fueled Vehicles
MECA has received numerous inquiries regarding the possibility of retrofitting emission control technologies on existing diesel engines. These inquiries have included requests for technical information, past experience with retrofit, and information on the impact of fuel sulfur on emission control retrofit technologies. - 12. Retrofit Diesel Particulate Filter Application Considerations and Experience
Key Considerations of a Diesel Particulate Filter Retrofit Control Program, Operating Experience with Retrofit Diesel Particulate Filters, Discussion of Diesel Particulate Filter, Applications Matrix - 8. Retrofit Diesel Particulate Filter Application Considerations and Experience
Key Considerations of a Diesel Particulate Filter Retrofit Control Program, Operating Experience with Retrofit Diesel Particulate Filters, Discussion of Diesel Particulate Filter, Applications Matrix - Global Trends in Diesel Emission Control - A 1999 Update
Driven in part by concerns regarding global warming, there is a clear trend toward increased sales of light duty diesel vehicles in many parts of the world (...) - 11. Staff Report: Initial Statement of Reasons - Proposed Regulation for a Public Transit Fleet Rule and Emission Standards for New Urban Buses
- California's Heavy Duty Inspection Program
The California Air Resources Board (ARB) is testing heavy-duty trucks and buses for excessive smoke and tampering. Any heavy-duty vehicle traveling in California, including vehicles registered in other states and foreign countries, may be tested. - Continuously Regenerating Technology (CRT)
- Heavy-Duty Diesel Emission Reduction Project Retrofit/Rebuild Component
Use of Urban Bus Program Retrofit/Rebuild Equipment and Third Party Verification System and Model State Policies for the Retrofit/Rebuild of Heavy-Duty Diesel Engines - WestStart/CALSTART
The CALSTART site is a resourceful pool of relevant information and includes a description of the Santa Barbara Metropolitan Transit District (MTD). - w2. Summary of emission standards in various countries around the world
- Advanced heavy duty diesels
- 1. Breathing Clean: Considering the Switch to Natural Gas Buses
In response to emerging epidemiological evidence of the toxicity of diesel vehicular emissions, there is growing interest in substituting conventional diesel with much cleaner natural gas in cities where ambient concentrations of particulate matter are markedly higher than what is internationally considered acceptable. - 4. Breathing Clean: Considering the Switch to Natural Gas Buses
In response to emerging epidemiological evidence of the toxicity of diesel vehicular emissions, there is growing interest in substituting conventional diesel with much cleaner natural gas in cities where ambient concentrations of particulate matter are markedly higher than what is internationally considered acceptable. - w1. Developments in U.S. Alternative Fuel Markets
The Energy Information Administration - w2. Developments in U.S. Alternative Fuel Markets
The Energy Information Administration - 10. Sustainable Transport: New Insights From the IEAs Worldwide Transit Study
Over the past year, the IEA has undertaken a study of transit systems in cities around the world. The primary focus has been on bus systems in developing countries, where dilapidated vehicles, old technologies, and rapidly increasing traffic congestion and sprawl are jeopardising the ability of the developing world s premier cities to achieve sustainability. - 7. Sustainable Transport: New Insights From the IEAs Worldwide Transit Study
Over the past year, the IEA has undertaken a study of transit systems in cities around the world. The primary focus has been on bus systems in developing countries, where dilapidated vehicles, old technologies, and rapidly increasing traffic congestion and sprawl are jeopardising the ability of the developing world s premier cities to achieve sustainability. - Global Trends in Diesel Emission Control - A 1999 Update
Driven in part by concerns regarding global warming, there is a clear trend toward increased sales of light duty diesel vehicles in many parts of the world (...) - Continuously Regenerating Technology (CRT)
- WestStart/CALSTART
The CALSTART site is a resourceful pool of relevant information and includes a description of the Santa Barbara Metropolitan Transit District (MTD). - 10. Bus Futures - New Technologies for Cleaner Cities
This new INFORM report brings good news about alternatives to the conventional diesel bus that have the potential to meet the travel needs of millions of Americans in and around our urban centers while protecting air quality and human health. - 2. Interim Report: Emissions Results from Clean Diesel Demonstration Program with CRTTM Particulate Filter at New York City Transit
- 2. Staff Report: Initial Statement of Reasons - Proposed Regulation for a Public Transit Fleet Rule and Emission Standards for New Urban Buses
- 3. Interim Report: Emissions Results from Clean Diesel Demonstration Program with CRTTM Particulate Filter at New York City Transit
- 4. Frequently Asked Questions on Diesel Emissions and Diesel-Emission Control Technologies
Diesel emissions regulations and control. - 5. Bus Futures - New Technologies for Cleaner Cities
This new INFORM report brings good news about alternatives to the conventional diesel bus that have the potential to meet the travel needs of millions of Americans in and around our urban centers while protecting air quality and human health. - 5. Interim Report: Emissions Results from Clean Diesel Demonstration Program with CRTTM Particulate Filter at New York City Transit
- 7. Bus Futures - New Technologies for Cleaner Cities
- 7. Interim Report: Emissions Results from Clean Diesel Demonstration Program with CRTTM Particulate Filter at New York City Transit
- 8. Alternative Fuel Transit Buses - Final Results from the National Renewable Energy Laboratory (NREL) Vehicle Evaluation Program
Transit buses represent one of the best applications for alternative fuels, which have already made significant inroads into the transit bus market. - 8. Bus Futures - New Technologies for Cleaner Cities
- 9. Alternative Fuel Transit Buses - Final Results from the National Renewable Energy Laboratory (NREL) Vehicle Evaluation Program
Transit buses represent one of the best applications for alternative fuels, which have already made significant inroads into the transit bus market. - Cleaner Fuels Strategies
- Staff Report: Initial Statement of Reasons - Proposed Regulation for a Public Transit Fleet Rule and Emission Standards for New Urban Buses
- Light duty diesels
- Light duty gasoline
- In-use vehicles
- w1. Developments in U.S. Alternative Fuel Markets
The Energy Information Administration - w2. Developments in U.S. Alternative Fuel Markets
The Energy Information Administration - 10. Sustainable Transport: New Insights From the IEAs Worldwide Transit Study
Over the past year, the IEA has undertaken a study of transit systems in cities around the world. The primary focus has been on bus systems in developing countries, where dilapidated vehicles, old technologies, and rapidly increasing traffic congestion and sprawl are jeopardising the ability of the developing world s premier cities to achieve sustainability. - 7. Sustainable Transport: New Insights From the IEAs Worldwide Transit Study
Over the past year, the IEA has undertaken a study of transit systems in cities around the world. The primary focus has been on bus systems in developing countries, where dilapidated vehicles, old technologies, and rapidly increasing traffic congestion and sprawl are jeopardising the ability of the developing world s premier cities to achieve sustainability. - In-Use Buses
There are many technical options and fuels available which have the potential to reduce the environmental impacts of existing buses. - In-Use Buses Overview
Four principle technology choices for cleaning up existing diesel buses are presented in this section - inspection and maintenance (I/M), retrofitting more advanced pollution controls, replacing existing engines with cleaner engines and conversions of existing diesel engines to CNG or LPG fuels - Inspection and maintenance
- Replacement programs
- Retrofit systems
- 1. Breathing Clean: Considering the Switch to Natural Gas Buses
In response to emerging epidemiological evidence of the toxicity of diesel vehicular emissions, there is growing interest in substituting conventional diesel with much cleaner natural gas in cities where ambient concentrations of particulate matter are markedly higher than what is internationally considered acceptable. - 4. Breathing Clean: Considering the Switch to Natural Gas Buses
In response to emerging epidemiological evidence of the toxicity of diesel vehicular emissions, there is growing interest in substituting conventional diesel with much cleaner natural gas in cities where ambient concentrations of particulate matter are markedly higher than what is internationally considered acceptable. - 1. Emission Control Retrofit of Diesel-Fueled Vehicles
MECA has received numerous inquiries regarding the possibility of retrofitting emission control technologies on existing diesel engines. These inquiries have included requests for technical information, past experience with retrofit, and information on the impact of fuel sulfur on emission control retrofit technologies. - 10. Sustainable Transport: New Insights From the IEAs Worldwide Transit Study
Over the past year, the IEA has undertaken a study of transit systems in cities around the world. The primary focus has been on bus systems in developing countries, where dilapidated vehicles, old technologies, and rapidly increasing traffic congestion and sprawl are jeopardising the ability of the developing world s premier cities to achieve sustainability. - 12. Retrofit Diesel Particulate Filter Application Considerations and Experience
Key Considerations of a Diesel Particulate Filter Retrofit Control Program, Operating Experience with Retrofit Diesel Particulate Filters, Discussion of Diesel Particulate Filter, Applications Matrix - 7. Sustainable Transport: New Insights From the IEAs Worldwide Transit Study
Over the past year, the IEA has undertaken a study of transit systems in cities around the world. The primary focus has been on bus systems in developing countries, where dilapidated vehicles, old technologies, and rapidly increasing traffic congestion and sprawl are jeopardising the ability of the developing world s premier cities to achieve sustainability. - 8. Retrofit Diesel Particulate Filter Application Considerations and Experience
Key Considerations of a Diesel Particulate Filter Retrofit Control Program, Operating Experience with Retrofit Diesel Particulate Filters, Discussion of Diesel Particulate Filter, Applications Matrix - Global Trends in Diesel Emission Control - A 1999 Update
Driven in part by concerns regarding global warming, there is a clear trend toward increased sales of light duty diesel vehicles in many parts of the world (...) - 11. Staff Report: Initial Statement of Reasons - Proposed Regulation for a Public Transit Fleet Rule and Emission Standards for New Urban Buses
- Continuously Regenerating Technology (CRT)
- WestStart/CALSTART
The CALSTART site is a resourceful pool of relevant information and includes a description of the Santa Barbara Metropolitan Transit District (MTD). - 10. Bus Futures - New Technologies for Cleaner Cities
This new INFORM report brings good news about alternatives to the conventional diesel bus that have the potential to meet the travel needs of millions of Americans in and around our urban centers while protecting air quality and human health. - 2. Interim Report: Emissions Results from Clean Diesel Demonstration Program with CRTTM Particulate Filter at New York City Transit
- 2. Staff Report: Initial Statement of Reasons - Proposed Regulation for a Public Transit Fleet Rule and Emission Standards for New Urban Buses
- 3. Interim Report: Emissions Results from Clean Diesel Demonstration Program with CRTTM Particulate Filter at New York City Transit
- 4. Frequently Asked Questions on Diesel Emissions and Diesel-Emission Control Technologies
Diesel emissions regulations and control. - 5. Bus Futures - New Technologies for Cleaner Cities
This new INFORM report brings good news about alternatives to the conventional diesel bus that have the potential to meet the travel needs of millions of Americans in and around our urban centers while protecting air quality and human health. - 5. Interim Report: Emissions Results from Clean Diesel Demonstration Program with CRTTM Particulate Filter at New York City Transit
- 7. Bus Futures - New Technologies for Cleaner Cities
- 7. Interim Report: Emissions Results from Clean Diesel Demonstration Program with CRTTM Particulate Filter at New York City Transit
- 8. Alternative Fuel Transit Buses - Final Results from the National Renewable Energy Laboratory (NREL) Vehicle Evaluation Program
Transit buses represent one of the best applications for alternative fuels, which have already made significant inroads into the transit bus market. - 8. Bus Futures - New Technologies for Cleaner Cities
- 9. Alternative Fuel Transit Buses - Final Results from the National Renewable Energy Laboratory (NREL) Vehicle Evaluation Program
Transit buses represent one of the best applications for alternative fuels, which have already made significant inroads into the transit bus market. - Cleaner Fuels Strategies
- Staff Report: Initial Statement of Reasons - Proposed Regulation for a Public Transit Fleet Rule and Emission Standards for New Urban Buses
- 13. Un-Regulated Emissions from CRT-Equipped Transit Buses
- 4. Un-Regulated Emissions from CRT-Equipped Transit Buses
6th Diesel Engine Emissions Reduction Workshop, San Diego - 6. MECA Independent Cost Survey for Emission Control Retrofit Technologies
The report is designed to provide estimates on the range of costs for emission control technologies under the various scenarios spelled out in the report. Information regarding the costs of retrofit technology for specific applications should be obtained directly from the technology manufacturers - 9. MECA Independent Cost Survey for Emission Control Retrofit Technologies
The report is designed to provide estimates on the range of costs for emission control technologies under the various scenarios spelled out in the report. Information regarding the costs of retrofit technology for specific applications should be obtained directly from the technology manufacturers - Bus retrofit systems
Retrofit systems upgrade existing conventional diesel buses with advanced technological equipment, in many cases in conjunction with low sulfur fuels. - California's Diesel Risk Reduction Program
- ISX First Diesel to Get EPA 02 Approval
- Retrofit Projects in the United States
In 1993, the US Environmental Protection Agency (EPA) began to reduce urban residents' exposure to diesel exhaust from urban buses by implementing an urban bus retrofit/rebuild program. - US EPA adopts the final w207 emission standards for heavy-duty engines and diesel fuel regulation
- Un-Regulated Emissions from CRT-Equipped Transit Buses
- Conversions
- 1. Breathing Clean: Considering the Switch to Natural Gas Buses
In response to emerging epidemiological evidence of the toxicity of diesel vehicular emissions, there is growing interest in substituting conventional diesel with much cleaner natural gas in cities where ambient concentrations of particulate matter are markedly higher than what is internationally considered acceptable. - 4. Breathing Clean: Considering the Switch to Natural Gas Buses
In response to emerging epidemiological evidence of the toxicity of diesel vehicular emissions, there is growing interest in substituting conventional diesel with much cleaner natural gas in cities where ambient concentrations of particulate matter are markedly higher than what is internationally considered acceptable. - w1. Developments in U.S. Alternative Fuel Markets
The Energy Information Administration - w2. Developments in U.S. Alternative Fuel Markets
The Energy Information Administration - 4. A Comparative Analysis of the Feasibility and Cost of Compliance of Potential Future Emission Standards for Heavy Duty Vehicles Using Diesel or Natural Gas
- A Comparative Analysis of the Feasibility and Cost of Compliance of Potential Future Emission Standards for Heavy Duty Vehicles Using Diesel or Natural Gas
- Australian Bus Industry Confederation
The Australian Bus Industry Confederation site on emission standards. The "BIC's mission is to represent the collective interests of its members and to assist them in promoting the safety, efficiency and effectiveness of bus and coach transport in Australia." - Bus conversions
Bus conversions refer to original diesel buses being converted to the use of alternative fuels, in most cases CNG or LPG.
- Buses
- 1. Breathing Clean: Considering the Switch to Natural Gas Buses
In response to emerging epidemiological evidence of the toxicity of diesel vehicular emissions, there is growing interest in substituting conventional diesel with much cleaner natural gas in cities where ambient concentrations of particulate matter are markedly higher than what is internationally considered acceptable. - 4. Breathing Clean: Considering the Switch to Natural Gas Buses
In response to emerging epidemiological evidence of the toxicity of diesel vehicular emissions, there is growing interest in substituting conventional diesel with much cleaner natural gas in cities where ambient concentrations of particulate matter are markedly higher than what is internationally considered acceptable. - Urban Air Pollution - How Can Urban Bus Policy Reduce Air Pollution?
Buses are essential to everyday life in South Asia. They affect urban air quality both directly by emitting air pollutants and indirectly by reducing the congestion and emissions caused by the many smaller vehicles which they replace. - w1. Developments in U.S. Alternative Fuel Markets
The Energy Information Administration - w2. Developments in U.S. Alternative Fuel Markets
The Energy Information Administration - The natural gas bus
- 4. Analysis of Alternative Fuel Technologies for New York City Transit Buses
- Developments in U.S. Alternative Fuel Markets
The Energy Information Administration - 1. Emission Control Retrofit of Diesel-Fueled Vehicles
MECA has received numerous inquiries regarding the possibility of retrofitting emission control technologies on existing diesel engines. These inquiries have included requests for technical information, past experience with retrofit, and information on the impact of fuel sulfur on emission control retrofit technologies. - 10. Sustainable Transport: New Insights From the IEAs Worldwide Transit Study
Over the past year, the IEA has undertaken a study of transit systems in cities around the world. The primary focus has been on bus systems in developing countries, where dilapidated vehicles, old technologies, and rapidly increasing traffic congestion and sprawl are jeopardising the ability of the developing world s premier cities to achieve sustainability. - 12. Retrofit Diesel Particulate Filter Application Considerations and Experience
Key Considerations of a Diesel Particulate Filter Retrofit Control Program, Operating Experience with Retrofit Diesel Particulate Filters, Discussion of Diesel Particulate Filter, Applications Matrix - 7. Sustainable Transport: New Insights From the IEAs Worldwide Transit Study
Over the past year, the IEA has undertaken a study of transit systems in cities around the world. The primary focus has been on bus systems in developing countries, where dilapidated vehicles, old technologies, and rapidly increasing traffic congestion and sprawl are jeopardising the ability of the developing world s premier cities to achieve sustainability. - 8. Retrofit Diesel Particulate Filter Application Considerations and Experience
Key Considerations of a Diesel Particulate Filter Retrofit Control Program, Operating Experience with Retrofit Diesel Particulate Filters, Discussion of Diesel Particulate Filter, Applications Matrix - Global Trends in Diesel Emission Control - A 1999 Update
Driven in part by concerns regarding global warming, there is a clear trend toward increased sales of light duty diesel vehicles in many parts of the world (...) - New Buses
This section outlines the many technical options and fuels available which have the potential to reduce the environmental impacts of new buses. - New Buses Overview
All of the technologies listed in this section have different characteristics in terms of energy efficiency, life-cycle and tailpipe emissions (see table below). - 11. Staff Report: Initial Statement of Reasons - Proposed Regulation for a Public Transit Fleet Rule and Emission Standards for New Urban Buses
- California's Heavy Duty Inspection Program
The California Air Resources Board (ARB) is testing heavy-duty trucks and buses for excessive smoke and tampering. Any heavy-duty vehicle traveling in California, including vehicles registered in other states and foreign countries, may be tested. - Continuously Regenerating Technology (CRT)
- Heavy-Duty Diesel Emission Reduction Project Retrofit/Rebuild Component
Use of Urban Bus Program Retrofit/Rebuild Equipment and Third Party Verification System and Model State Policies for the Retrofit/Rebuild of Heavy-Duty Diesel Engines - WestStart/CALSTART
The CALSTART site is a resourceful pool of relevant information and includes a description of the Santa Barbara Metropolitan Transit District (MTD). - w2. Summary of emission standards in various countries around the world
- 10. Bus Futures - New Technologies for Cleaner Cities
This new INFORM report brings good news about alternatives to the conventional diesel bus that have the potential to meet the travel needs of millions of Americans in and around our urban centers while protecting air quality and human health. - 2. Interim Report: Emissions Results from Clean Diesel Demonstration Program with CRTTM Particulate Filter at New York City Transit
- 2. Staff Report: Initial Statement of Reasons - Proposed Regulation for a Public Transit Fleet Rule and Emission Standards for New Urban Buses
- 3. Interim Report: Emissions Results from Clean Diesel Demonstration Program with CRTTM Particulate Filter at New York City Transit
- 4. Frequently Asked Questions on Diesel Emissions and Diesel-Emission Control Technologies
Diesel emissions regulations and control. - 5. Bus Futures - New Technologies for Cleaner Cities
This new INFORM report brings good news about alternatives to the conventional diesel bus that have the potential to meet the travel needs of millions of Americans in and around our urban centers while protecting air quality and human health. - 5. Interim Report: Emissions Results from Clean Diesel Demonstration Program with CRTTM Particulate Filter at New York City Transit
- 7. Bus Futures - New Technologies for Cleaner Cities
- 7. Interim Report: Emissions Results from Clean Diesel Demonstration Program with CRTTM Particulate Filter at New York City Transit
- 8. Alternative Fuel Transit Buses - Final Results from the National Renewable Energy Laboratory (NREL) Vehicle Evaluation Program
Transit buses represent one of the best applications for alternative fuels, which have already made significant inroads into the transit bus market. - 8. Bus Futures - New Technologies for Cleaner Cities
- 9. Alternative Fuel Transit Buses - Final Results from the National Renewable Energy Laboratory (NREL) Vehicle Evaluation Program
Transit buses represent one of the best applications for alternative fuels, which have already made significant inroads into the transit bus market. - Cleaner Fuels Strategies
- Staff Report: Initial Statement of Reasons - Proposed Regulation for a Public Transit Fleet Rule and Emission Standards for New Urban Buses
- w1. Summary of emission standards in various countries around the world
- In-Use Buses
There are many technical options and fuels available which have the potential to reduce the environmental impacts of existing buses. - In-Use Buses Overview
Four principle technology choices for cleaning up existing diesel buses are presented in this section - inspection and maintenance (I/M), retrofitting more advanced pollution controls, replacing existing engines with cleaner engines and conversions of existing diesel engines to CNG or LPG fuels - AirCare
- Colorado Department of Public Health and Environment: Air Pollution Control Division Mobile Sources Program
- Diesel Technology Forum: Diesel Smoke
- Europa: The Inspection of In-Use Cars in Order to Attain Minimum Emissions of Pollutants and Optimum Energy Efficiency
- I and M programs
Inspection and maintenance programs identify buses needing repair. - Snap Acceleration Smoke Test Procedure for Heavy Duty Powered Vehicles
- w1. Snap Acceleration Smoke Test Procedure for Heavy Duty Powered Vehicles
- w2. Europa: The Inspection of In-Use Cars in Order to Attain Minimum Emissions of Pollutants and Optimum Energy Efficiency
- w3. Diesel Technology Forum: Diesel Smoke
- w4. Walsh CarLines
Here you will find the current issue of the CarLines newsletter as well as an archive of past issues. Also available are numerous other documents related to automobile emissions subjects.The newsletter archives are available Adobe Acrobat PDF (portable document format) files. - w5. Colorado Department of Public Health and Environment: Air Pollution Control Division Mobile Sources Program
- Alternative Fuels Transit Buses
Final Results from the National Renewable Energy Laboratory (NREL) Vehicle Evaluation Program - Bus Systems for the Future
- Bus replacement programs
Replacement programs replace or repower the existing bus engine with a new engine to meet lower emissions standards. - 13. Un-Regulated Emissions from CRT-Equipped Transit Buses
- 4. Un-Regulated Emissions from CRT-Equipped Transit Buses
6th Diesel Engine Emissions Reduction Workshop, San Diego - 6. MECA Independent Cost Survey for Emission Control Retrofit Technologies
The report is designed to provide estimates on the range of costs for emission control technologies under the various scenarios spelled out in the report. Information regarding the costs of retrofit technology for specific applications should be obtained directly from the technology manufacturers - 9. MECA Independent Cost Survey for Emission Control Retrofit Technologies
The report is designed to provide estimates on the range of costs for emission control technologies under the various scenarios spelled out in the report. Information regarding the costs of retrofit technology for specific applications should be obtained directly from the technology manufacturers - Bus retrofit systems
Retrofit systems upgrade existing conventional diesel buses with advanced technological equipment, in many cases in conjunction with low sulfur fuels. - California's Diesel Risk Reduction Program
- ISX First Diesel to Get EPA 02 Approval
- Retrofit Projects in the United States
In 1993, the US Environmental Protection Agency (EPA) began to reduce urban residents' exposure to diesel exhaust from urban buses by implementing an urban bus retrofit/rebuild program. - US EPA adopts the final w207 emission standards for heavy-duty engines and diesel fuel regulation
- Un-Regulated Emissions from CRT-Equipped Transit Buses
- 4. A Comparative Analysis of the Feasibility and Cost of Compliance of Potential Future Emission Standards for Heavy Duty Vehicles Using Diesel or Natural Gas
- A Comparative Analysis of the Feasibility and Cost of Compliance of Potential Future Emission Standards for Heavy Duty Vehicles Using Diesel or Natural Gas
- Australian Bus Industry Confederation
The Australian Bus Industry Confederation site on emission standards. The "BIC's mission is to represent the collective interests of its members and to assist them in promoting the safety, efficiency and effectiveness of bus and coach transport in Australia." - Bus conversions
Bus conversions refer to original diesel buses being converted to the use of alternative fuels, in most cases CNG or LPG. - 1. California's Heavy Duty Inspection Program
The California Air Resources Board (ARB) is testing heavy-duty trucks and buses for excessive smoke and tampering. Any heavy-duty vehicle traveling in California, including vehicles registered in other states and foreign countries, may be tested. - 7. Bio-ethanol vehicles: cleaner exhaust gas - cleaner air
The growing vehicle fleet around the world has intensified the search of alternative renewable fuels and become an important area of research. Bio-ethanol is by many considered one of the most important alternatives to diesel and gasoline, mainly because it does not contribute to the greenhouse effect. - Advanced Diesels Bus
The advanced diesel bus uses advanced engine systems and aftertreatment emission reduction devices, usually in conjunction with lower sulfur fuel. - CNG Bus
The compressed natural gas (CNG) bus uses a spark-ignition engine to burn natural gas, which contains mostly methane obtained from fossil resources. - CNG vs. Diesel buses in Perth, Australia
This is an explanation of the city of Perth's 1998 decision to run their bus fleet with diesel buses and low sulfur diesel instead of converting it to natural gas. The decision results from a study which compares clean diesel, CNG and LPG on environmental and economic reasons. - Cleaner Bus Fleets in New York City
The Department of Transport's bus system carries over 114 million people annually through a mix of local and express bus services provided by seven private, franchised bus companies. - Conventional Diesels
Cleaner conventional buses meet more stringent emissions standards. - Electric Bus
The battery electric bus is powered by electrochemical batteries which are charged using electricity from stationary power plants. - Ethanol Bus
The ethanol bus runs on alcohol which can be produced from a variety of renewable biological resources. - European Automobile Manufacturers Association
- Fuel Cell Buses
The fuel cell bus employs a novel technology totally different from the internal combustion engine, which converts chemical energy directly into electric energy used to power the vehicle. - Georgetown University Fuel Cell Bus Program
The program is dedicated to support the development of fuel cell technology and assist industry in commercialization of fuel cells for transit applications. Its transit buses are demonstrated at various occasions in the U.S. - Hybrid Electric Bus
Hybrid electric vehicles (HEV) have two power sources. One converts fuel into useable energy, and the other, an electric motor powered by an advanced energy storage device, lowers the demand placed on the first power source. - LPG Bus
The liquefied petroleum gas (LPG) bus uses mostly propane gas for combustion. - Partnership for cleaner vehicles and fuels
Not available for download. - Walsh CarLines
Here you will find the current issue of the CarLines newsletter as well as an archive of past issues. Also available are numerous other documents related to automobile emissions subjects.The newsletter archives are available Adobe Acrobat PDF (portable document format) files. - w1. Fuel Cell Bus Club
- Trucks
- 1. Breathing Clean: Considering the Switch to Natural Gas Buses
In response to emerging epidemiological evidence of the toxicity of diesel vehicular emissions, there is growing interest in substituting conventional diesel with much cleaner natural gas in cities where ambient concentrations of particulate matter are markedly higher than what is internationally considered acceptable. - 4. Breathing Clean: Considering the Switch to Natural Gas Buses
In response to emerging epidemiological evidence of the toxicity of diesel vehicular emissions, there is growing interest in substituting conventional diesel with much cleaner natural gas in cities where ambient concentrations of particulate matter are markedly higher than what is internationally considered acceptable. - 1. Emission Control Retrofit of Diesel-Fueled Vehicles
MECA has received numerous inquiries regarding the possibility of retrofitting emission control technologies on existing diesel engines. These inquiries have included requests for technical information, past experience with retrofit, and information on the impact of fuel sulfur on emission control retrofit technologies. - 10. Sustainable Transport: New Insights From the IEAs Worldwide Transit Study
Over the past year, the IEA has undertaken a study of transit systems in cities around the world. The primary focus has been on bus systems in developing countries, where dilapidated vehicles, old technologies, and rapidly increasing traffic congestion and sprawl are jeopardising the ability of the developing world s premier cities to achieve sustainability. - 12. Retrofit Diesel Particulate Filter Application Considerations and Experience
Key Considerations of a Diesel Particulate Filter Retrofit Control Program, Operating Experience with Retrofit Diesel Particulate Filters, Discussion of Diesel Particulate Filter, Applications Matrix - 7. Sustainable Transport: New Insights From the IEAs Worldwide Transit Study
Over the past year, the IEA has undertaken a study of transit systems in cities around the world. The primary focus has been on bus systems in developing countries, where dilapidated vehicles, old technologies, and rapidly increasing traffic congestion and sprawl are jeopardising the ability of the developing world s premier cities to achieve sustainability. - 8. Retrofit Diesel Particulate Filter Application Considerations and Experience
Key Considerations of a Diesel Particulate Filter Retrofit Control Program, Operating Experience with Retrofit Diesel Particulate Filters, Discussion of Diesel Particulate Filter, Applications Matrix - Global Trends in Diesel Emission Control - A 1999 Update
Driven in part by concerns regarding global warming, there is a clear trend toward increased sales of light duty diesel vehicles in many parts of the world (...) - 11. Staff Report: Initial Statement of Reasons - Proposed Regulation for a Public Transit Fleet Rule and Emission Standards for New Urban Buses
- California's Heavy Duty Inspection Program
The California Air Resources Board (ARB) is testing heavy-duty trucks and buses for excessive smoke and tampering. Any heavy-duty vehicle traveling in California, including vehicles registered in other states and foreign countries, may be tested. - w2. Summary of emission standards in various countries around the world
- 10. Bus Futures - New Technologies for Cleaner Cities
This new INFORM report brings good news about alternatives to the conventional diesel bus that have the potential to meet the travel needs of millions of Americans in and around our urban centers while protecting air quality and human health. - 2. Interim Report: Emissions Results from Clean Diesel Demonstration Program with CRTTM Particulate Filter at New York City Transit
- 2. Staff Report: Initial Statement of Reasons - Proposed Regulation for a Public Transit Fleet Rule and Emission Standards for New Urban Buses
- 3. Interim Report: Emissions Results from Clean Diesel Demonstration Program with CRTTM Particulate Filter at New York City Transit
- 4. Frequently Asked Questions on Diesel Emissions and Diesel-Emission Control Technologies
Diesel emissions regulations and control. - 5. Bus Futures - New Technologies for Cleaner Cities
This new INFORM report brings good news about alternatives to the conventional diesel bus that have the potential to meet the travel needs of millions of Americans in and around our urban centers while protecting air quality and human health. - 5. Interim Report: Emissions Results from Clean Diesel Demonstration Program with CRTTM Particulate Filter at New York City Transit
- 7. Bus Futures - New Technologies for Cleaner Cities
- 7. Interim Report: Emissions Results from Clean Diesel Demonstration Program with CRTTM Particulate Filter at New York City Transit
- 8. Alternative Fuel Transit Buses - Final Results from the National Renewable Energy Laboratory (NREL) Vehicle Evaluation Program
Transit buses represent one of the best applications for alternative fuels, which have already made significant inroads into the transit bus market. - 8. Bus Futures - New Technologies for Cleaner Cities
- 9. Alternative Fuel Transit Buses - Final Results from the National Renewable Energy Laboratory (NREL) Vehicle Evaluation Program
Transit buses represent one of the best applications for alternative fuels, which have already made significant inroads into the transit bus market. - Cleaner Fuels Strategies
- Staff Report: Initial Statement of Reasons - Proposed Regulation for a Public Transit Fleet Rule and Emission Standards for New Urban Buses
- w1. Summary of emission standards in various countries around the world
- w1. Snap Acceleration Smoke Test Procedure for Heavy Duty Powered Vehicles
- w2. Europa: The Inspection of In-Use Cars in Order to Attain Minimum Emissions of Pollutants and Optimum Energy Efficiency
- w3. Diesel Technology Forum: Diesel Smoke
- w4. Walsh CarLines
Here you will find the current issue of the CarLines newsletter as well as an archive of past issues. Also available are numerous other documents related to automobile emissions subjects.The newsletter archives are available Adobe Acrobat PDF (portable document format) files. - w5. Colorado Department of Public Health and Environment: Air Pollution Control Division Mobile Sources Program
- 13. Un-Regulated Emissions from CRT-Equipped Transit Buses
- 4. Un-Regulated Emissions from CRT-Equipped Transit Buses
6th Diesel Engine Emissions Reduction Workshop, San Diego - 6. MECA Independent Cost Survey for Emission Control Retrofit Technologies
The report is designed to provide estimates on the range of costs for emission control technologies under the various scenarios spelled out in the report. Information regarding the costs of retrofit technology for specific applications should be obtained directly from the technology manufacturers - 9. MECA Independent Cost Survey for Emission Control Retrofit Technologies
The report is designed to provide estimates on the range of costs for emission control technologies under the various scenarios spelled out in the report. Information regarding the costs of retrofit technology for specific applications should be obtained directly from the technology manufacturers - California's Diesel Risk Reduction Program
- Un-Regulated Emissions from CRT-Equipped Transit Buses
- 4. A Comparative Analysis of the Feasibility and Cost of Compliance of Potential Future Emission Standards for Heavy Duty Vehicles Using Diesel or Natural Gas
- A Comparative Analysis of the Feasibility and Cost of Compliance of Potential Future Emission Standards for Heavy Duty Vehicles Using Diesel or Natural Gas
- 1. California's Heavy Duty Inspection Program
The California Air Resources Board (ARB) is testing heavy-duty trucks and buses for excessive smoke and tampering. Any heavy-duty vehicle traveling in California, including vehicles registered in other states and foreign countries, may be tested. - European Automobile Manufacturers Association
- Walsh CarLines
Here you will find the current issue of the CarLines newsletter as well as an archive of past issues. Also available are numerous other documents related to automobile emissions subjects.The newsletter archives are available Adobe Acrobat PDF (portable document format) files.
- Automobiles
- European Automobile Manufacturers Association
- Walsh CarLines
Here you will find the current issue of the CarLines newsletter as well as an archive of past issues. Also available are numerous other documents related to automobile emissions subjects.The newsletter archives are available Adobe Acrobat PDF (portable document format) files.
- Cleaner fuels and energy sources
- Developments in U.S. Alternative Fuel Markets
The Energy Information Administration - w1. Fuel Cell Bus Club
- Alternative fuels and energy sources
- Alternative Fuels Transit Buses
Final Results from the National Renewable Energy Laboratory (NREL) Vehicle Evaluation Program - Compressed Natural Gas (CNG)
- 1. Breathing Clean: Considering the Switch to Natural Gas Buses
In response to emerging epidemiological evidence of the toxicity of diesel vehicular emissions, there is growing interest in substituting conventional diesel with much cleaner natural gas in cities where ambient concentrations of particulate matter are markedly higher than what is internationally considered acceptable. - 4. Breathing Clean: Considering the Switch to Natural Gas Buses
In response to emerging epidemiological evidence of the toxicity of diesel vehicular emissions, there is growing interest in substituting conventional diesel with much cleaner natural gas in cities where ambient concentrations of particulate matter are markedly higher than what is internationally considered acceptable. - 10. Sustainable Transport: New Insights From the IEAs Worldwide Transit Study
Over the past year, the IEA has undertaken a study of transit systems in cities around the world. The primary focus has been on bus systems in developing countries, where dilapidated vehicles, old technologies, and rapidly increasing traffic congestion and sprawl are jeopardising the ability of the developing world s premier cities to achieve sustainability. - 7. Sustainable Transport: New Insights From the IEAs Worldwide Transit Study
Over the past year, the IEA has undertaken a study of transit systems in cities around the world. The primary focus has been on bus systems in developing countries, where dilapidated vehicles, old technologies, and rapidly increasing traffic congestion and sprawl are jeopardising the ability of the developing world s premier cities to achieve sustainability. - 10. Bus Futures - New Technologies for Cleaner Cities
This new INFORM report brings good news about alternatives to the conventional diesel bus that have the potential to meet the travel needs of millions of Americans in and around our urban centers while protecting air quality and human health. - 5. Bus Futures - New Technologies for Cleaner Cities
This new INFORM report brings good news about alternatives to the conventional diesel bus that have the potential to meet the travel needs of millions of Americans in and around our urban centers while protecting air quality and human health. - 7. Bus Futures - New Technologies for Cleaner Cities
- 8. Alternative Fuel Transit Buses - Final Results from the National Renewable Energy Laboratory (NREL) Vehicle Evaluation Program
Transit buses represent one of the best applications for alternative fuels, which have already made significant inroads into the transit bus market. - 8. Bus Futures - New Technologies for Cleaner Cities
- 9. Alternative Fuel Transit Buses - Final Results from the National Renewable Energy Laboratory (NREL) Vehicle Evaluation Program
Transit buses represent one of the best applications for alternative fuels, which have already made significant inroads into the transit bus market. - CNG Bus
The compressed natural gas (CNG) bus uses a spark-ignition engine to burn natural gas, which contains mostly methane obtained from fossil resources. - CNG vs. Diesel buses in Perth, Australia
This is an explanation of the city of Perth's 1998 decision to run their bus fleet with diesel buses and low sulfur diesel instead of converting it to natural gas. The decision results from a study which compares clean diesel, CNG and LPG on environmental and economic reasons. - Cleaner Bus Fleets in New York City
The Department of Transport's bus system carries over 114 million people annually through a mix of local and express bus services provided by seven private, franchised bus companies.
- Liquified Petroleum Gas (LPG)
- w1. Developments in U.S. Alternative Fuel Markets
The Energy Information Administration - w2. Developments in U.S. Alternative Fuel Markets
The Energy Information Administration - 10. Sustainable Transport: New Insights From the IEAs Worldwide Transit Study
Over the past year, the IEA has undertaken a study of transit systems in cities around the world. The primary focus has been on bus systems in developing countries, where dilapidated vehicles, old technologies, and rapidly increasing traffic congestion and sprawl are jeopardising the ability of the developing world s premier cities to achieve sustainability. - 7. Sustainable Transport: New Insights From the IEAs Worldwide Transit Study
Over the past year, the IEA has undertaken a study of transit systems in cities around the world. The primary focus has been on bus systems in developing countries, where dilapidated vehicles, old technologies, and rapidly increasing traffic congestion and sprawl are jeopardising the ability of the developing world s premier cities to achieve sustainability. - LPG Bus
The liquefied petroleum gas (LPG) bus uses mostly propane gas for combustion.
- Biofuels
- 8. Alternative Fuel Transit Buses - Final Results from the National Renewable Energy Laboratory (NREL) Vehicle Evaluation Program
Transit buses represent one of the best applications for alternative fuels, which have already made significant inroads into the transit bus market. - 9. Alternative Fuel Transit Buses - Final Results from the National Renewable Energy Laboratory (NREL) Vehicle Evaluation Program
Transit buses represent one of the best applications for alternative fuels, which have already made significant inroads into the transit bus market. - 7. Bio-ethanol vehicles: cleaner exhaust gas - cleaner air
The growing vehicle fleet around the world has intensified the search of alternative renewable fuels and become an important area of research. Bio-ethanol is by many considered one of the most important alternatives to diesel and gasoline, mainly because it does not contribute to the greenhouse effect. - Ethanol Bus
The ethanol bus runs on alcohol which can be produced from a variety of renewable biological resources.
- Hydrogen and fuel cells
- 7. Sustainable Transport: New Insights From the IEAs Worldwide Transit Study
Over the past year, the IEA has undertaken a study of transit systems in cities around the world. The primary focus has been on bus systems in developing countries, where dilapidated vehicles, old technologies, and rapidly increasing traffic congestion and sprawl are jeopardising the ability of the developing world s premier cities to achieve sustainability. - Cleaner Bus Fleets in New York City
The Department of Transport's bus system carries over 114 million people annually through a mix of local and express bus services provided by seven private, franchised bus companies. - Fuel Cell Buses
The fuel cell bus employs a novel technology totally different from the internal combustion engine, which converts chemical energy directly into electric energy used to power the vehicle.
- Electric vehicles
- 7. Sustainable Transport: New Insights From the IEAs Worldwide Transit Study
Over the past year, the IEA has undertaken a study of transit systems in cities around the world. The primary focus has been on bus systems in developing countries, where dilapidated vehicles, old technologies, and rapidly increasing traffic congestion and sprawl are jeopardising the ability of the developing world s premier cities to achieve sustainability. - 11. Staff Report: Initial Statement of Reasons - Proposed Regulation for a Public Transit Fleet Rule and Emission Standards for New Urban Buses
- WestStart/CALSTART
The CALSTART site is a resourceful pool of relevant information and includes a description of the Santa Barbara Metropolitan Transit District (MTD). - 2. Staff Report: Initial Statement of Reasons - Proposed Regulation for a Public Transit Fleet Rule and Emission Standards for New Urban Buses
- Staff Report: Initial Statement of Reasons - Proposed Regulation for a Public Transit Fleet Rule and Emission Standards for New Urban Buses
- Electric Bus
The battery electric bus is powered by electrochemical batteries which are charged using electricity from stationary power plants. - Hybrid Electric Bus
Hybrid electric vehicles (HEV) have two power sources. One converts fuel into useable energy, and the other, an electric motor powered by an advanced energy storage device, lowers the demand placed on the first power source.
- Conventional fuels
- Sustainable transport
- Alternative Fuels Transit Buses
Final Results from the National Renewable Energy Laboratory (NREL) Vehicle Evaluation Program
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