B:
Bridges - Science Tracer Bullet - Bridges - Science Tracer Bullets - Research Finding Aids from the Library of Congress, Science Reference Services. [U.S. Library of Congress (LOC)]

C:
Commercial Truck and Bus Safety Information - Search by USDOT or motor carrier (MC) number to view publicly available motor carrier safety data. [U.S. Department of Transportation (DOT), Federal Motor Carrier Safety Administration]

D:
Distracted Driving - Offical U.S. Government website for distracted driving [U.S. Department of Transportation (DOT)]

E:
Environmental Management - Responsible for the risk reduction and cleanup of the environmental legacy of the Nation's nuclear weapons program [U.S. Department of Energy (DOE), Office of Environmental Management (EM)]

F:
FAA Safety - Training, outreach,and education on aviation safety including an alliance to encourage growth of a positive safety culture within the aviation community. [U.S. Department of Transportation (DOT), Federal Aviation Administration (FAA)]

Fatality Analysis Reporting System - Annual national statistics for motor vehicle traffic crashes and traffic crash fatalities. [U.S. Department of Transportation (DOT), National Highway Traffic Safety Administration]

N:
National Transportation Safety Board - The National Transportation Safety Board is an independent U.S. Federal agency that investigates every civil aviation accident in the United States and significant accidents in the other modes of transportation, conducts special investigations and safety studies, and issues safety recommendations to prevent future accidents. [Ad Hoc Organizations, National Transportation Safety Board]

R:
Record Group 198: Records of the Board of Investigation and Research-Transportation, 1940 - 1944 - National Archives' Archival Research Catalog description for Record Group 198: Records of the Board of Investigation and Research-Transportation, 1940 - 1944 [U.S. National Archives and Records Administration (NARA)]

T:
TSA: Advanced Imaging Technology - Technology to help ensure travel safety [U.S. Department of Homeland Security (DHS), Travel Security Administration]

TSA: Helpful Hints for Holiday Travelers - Helpful hints to be prepared for security before traveling [U.S. Department of Homeland Security (DHS), Transportation Security Administration]