The European Commission has proposed new emissions standards for two- and three-wheeled powered vehicles and quadricycles, collectively termed L-category vehicles, as part of a broader regulation that would also cover safety and market surveillance.


Case study demonstrates how metrics that include vehicle and/or fuel weight could relax incentives for manufacturers to devote technological improvements to reducing fuel consumption rather than boosting performance.


Surveys the range of test cycles used to evaluate the efficiency of vehicles—including passenger cars and trucks, motorcycles, heavy-duty trucks and buses, and marine vessels—in order to inform ICAO discussion of a CO2 certification procedure.


A critical assessment of one of the four consultation documents published by the European Commission to inform its 2010 consultation on indirect land use change.


Summarizes differences between size-based and mass-based vehicle standards and discusses their relative advantages and disadvantages.


The availability and low cost of natural gas, less stringent new engine emissions standards, and fuel sulfur levels that inhibit the use of the most advanced diesel engines all contribute to a continued high level of interest in CNG vehicles in many developing countries.


Surveys policy context and options for motorcycles, TSRs, and similar motorized vehicles in India.


Overview of congestion-charging programs aimed in reducing motor-vehicle traffic: in-place systems in London, Singapore, and Stockholm; a 1980s pilot program and subsequent follow-on studies in Hong Kong; and a 2007 ICCT-sponsored study of Santa Clara County, California.


On April 1, 2010, the U.S. Environmental Protection Agency and Department of Transportation finalized a new joint regulation for greenhouse gas (GHG) emissions and fuel economy for model year 2012-16 light duty vehicles.


Summarizes one of the most promising fiscal policy tools available to complement vehicle emissions standards: so-called feebate programs, in which more efficient vehicles receive rebates and less efficient vehicles are assessed fees.


On February 3, 2010, the EPA finalized revisions to the National Renewable Fuel Standard. The new rule (RFS2) incorporates changes mandated by the 2007 Energy Independence and Security Act (EISA), and is a major amendment of the original standard.


Using existing or soon-to-be-available mainstream engineering techniques, automakers can reduce passenger-vehicle mass by one third in exchange for a 3% increase in component costs.


Discusses initial ICCT work on sales‐weighted historical trends in new aircraft design attributes and their influence on aircraft efficiency, using design range as a first area of inquiry.


Final report of the California ETAAC Advanced Technology Sub-Group.


Policy-relevant guidance on black carbon, a solid particle emitted during incomplete combustion and a significant contributor to both climate change public health problems.


Estimates the sales and activity-weighted efficiency of new jet aircraft from 1960 to 2008 to argue that fuel price has been an inconsistent driver of aircraft efficiency, and that an aircraft CO2 standard is most likely to reduce emissions if it applies to all newly built aircraft from current production lines, not just to new designs.


An assessment of new and emerging technologies that could be phased in between 2012 and 2017 to reduce carbon dioxide emissions from long haul tractor-trailers by up to 50%. The report concludes that most of these measures would produce net savings over the life of a vehicle due to reduced fuel costs.


In many cities around the world, two- and three-wheel vehicles are the main mode of personal and commercial transportation. Motorcycles are cheaper to own than cars and often more convenient to navigate on congested roadways. Unfortunately, emissions from two- and three-wheelers have long been uncontrolled. The explosive growth in motorcycle usage in Asian cities and around the world has resulted in a significant deterioration of urban air quality.


Overview of low-carbon fuel related standards in various stages of development and implementation in the U.S., California, Europe, and the UK.


Demonstrates a linear-model approach to estimating fuel economy in trucks and buses.