Handbook addresses collaboration in analyses prepared under the National Environmental Policy Act.

Report to help make transportation agencies better stewards of the environment.

Computer model of light-duty vehicle emissions produced as a function of the vehicle operating mode.

A comprehensive guide to state-of-the-art atmospheric emissions inventory methodology in Europe.

Search for examples of transportation conformity documents.

Report explores ecological impact of roadside vegetation from deicers and other plant stressors.

Database of links and information and a wide range of environmental and transportation topics.

Explorese the development and modification of the zero-emission vehicle program.

Semi-automated method to identify and classify inland wetlands.

Implementation resources to help create collaborative and integrated transportation decision-making process.

Software and supporting documentation to help support environmental management for transportation & planning agencies.

Surface Transportation Environment and Planning lessons learned, stakeholder outreach, feedback and more.

Surface Transportation Environment and Planning Cooperative Research Program (STEP) information.

The role of planning, building, and maintaining roads in terms of reducing the environmental impact of automobiles.

Survey results of methods used by state DOTs.

Tool to facilitate compliance by State and local agencies with the transportation conformity requirements.

Search for Environmental Impact Statements (EIS), technical reports and journal articles.