Transportation presents a substantial and growing worldwide greenhouse gas (GHG) emission challenge. GHG mitigation strategies can be grouped into three categories: vehicle efficiency, low carbon fuels, and travel reduction. Potential GHG reductions are very large, with varying levels of cost...

Heavy-duty truck engine idling results in significant costs, fuel consumption, emissions, noise, and engine maintenance. Two promising alternatives to idling, grid connection ("shore power") and onboard auxiliary power units (APUs), are being pursued by industry and government. Their...

On April 5, 2005, a voluntary agreement between the automobile industry and government officials of Canada was reached to commit to greenhouse gas emission reductions through the year 2010. This report compares Canada's voluntary agreement with other voluntary and mandatory greenhouse gas...

Tire purchasing and disposal impose considerable cost and waste burdens on private vehicle owners and fleet managers. This research investigates tire maintenance management practices and tire-related vehicle technologies that have the potential to relieve some of these burdens. We investigate...

California’s low carbon fuel standard (LCFS) was designed to incentivize a diverse array of available strategies for reducing transportation greenhouse gas (GHG) emissions. It provides strong incentives for fuels with lower GHG emissions, while explicitly requiring a 10% reduction in...

Many diverse actions can be taken to reduce greenhouse gas (GHG) emissions. Increasingly in the United States, policy-makers at sub-national levels are setting emission targets and implementing plans for sector-specific GHG reductions. In this paper, local, state, and regional policy actions in...

Governments worldwide and in the U.S. are enacting a variety of measures to mitigate greenhouse gas emissions (GHG) from various economic sectors. Tools to prioritize these measures are generally lacking in analytical rigor. On the other hand, the research literature continues to proliferate...

The 2005 voluntary agreement between the automobile industry and Canadian government to reduce greenhouse gas emissions from passenger vehicles is evaluated. We analyze the likely effect of the agreement on emissions, and on use of biofuels and advanced vehicle technologies. We conclude that the...

The California Air Resources Board's emissions inventory estimates indicate that ambient air quality in several regions of California is substantially affected by the exhaust emissions of diesel trucks. There are insufficient data to accurately model the energy and emissions impacts of...

On April 5, 2005, a voluntary agreement between the automobile industry and government officials of Canada was reached to commit to greenhouse gas emission reductions through the year 2010. This report compares Canada’s voluntary agreement with other voluntary and mandatory greenhouse gas...