Subject
Federal aid to transportation
489
Appropriations and expenditures
92
Transportation and state
88
Roads Finance
75
Infrastructure (Economics) Finance
71
Highway law
49
Roads Finance Law and legislation
44
Transportation Finance
44
Transportation Finance Law and legislation
31
Transportation Law and legislation
27
Rules and practice
26
Local transit Finance
22
Transportation Capital investments
22
Infrastructure (Economics)
17
Railroads Finance
17
Aeronautics, Commercial Law and legislation
16
Federal aid to housing
16
Roads States Finance
15
Transportation Safety measures
15
Motor fuels Taxation
13
Traffic safety Finance
13
Public-private sector cooperation
12
Grants-in-aid
11
Local transit Finance Law and legislation
11
Transportation
11
Transportation Planning
11
Transportation, Automotive Law and legislation
11
Federal aid to transportation States
10
Railroads Passenger traffic
10
Local transit
9
Traffic safety
9
Administrative agencies Appropriations and expenditures
8
High speed trains Finance Law and legislation
8
Management
8
Freight and freightage
7
Infrastructure (Economics) Law and legislation
7
Interstate Highway System
7
Job creation Law and legislation
7
Railroads Passenger traffic Finance
7
Aeronautics Safety measures
6
Aeronautics, Commercial Finance
6
Finance
6
Highway planning
6
Local transit Law and legislation
6
Railroad law
6
Railroads and state
6
Roads
6
Transportation Research
6
User charges
6
Water resources development Finance
6
more ...