Accidents•
Accounting and auditing•
Administrative law and regulatory procedures•
Administrative remedies•
Advanced technology and technological innovations•
Agricultural conservation and pollution•
Air quality•
Atmospheric science and weather•
Broadcasting, cable, digital technologies•
Building construction•
Cardiovascular and respiratory health•
Civil actions and liability•
Climate change and greenhouse gases•
Commuting•
Computers and information technology•
Congressional oversight•
Department of Transportation•
Disability assistance•
Drug, alcohol, tobacco use•
Economic development•
Emergency communications systems•
Emergency medical services and trauma care•
Emergency planning and evacuation•
Employment and training programs•
Environmental assessment, monitoring, research•
Environmental regulatory procedures•
Fires•
Floods and storm protection•
Geography and mapping•
Government information and archives•
Government lending and loan guarantees•
Government studies and investigations•
Government trust funds•
Infectious and parasitic diseases•
Interest, dividends, interest rates•
Intergovernmental relations•
Internet and video services•
Internet, web applications, social media•
Lakes and rivers•
Licensing and registrations•
Life, casualty, property insurance•
Marine and coastal resources, fisheries•
Motor carriers•
Motor vehicles•
Natural disasters•
Performance measurement•
Public contracts and procurement•
Public transit•
Public-private cooperation•
Railroads•
Regional and metropolitan planning•
Research administration and funding•
Research and development•
Roads and highways•
Rural conditions and development•
Sales and excise taxes•
Social security and elderly assistance•
Solid waste and recycling•
State and local government operations•
Technology transfer and commercialization•
Transportation employees•
Transportation programs funding•
Transportation safety and security•
Urban and suburban affairs and development•
User charges and fees•
Water quality•
Watersheds