Subject
Federal aid to transportation
13
Transportation and state
7
Infrastructure (Economics)
4
Roads Finance
3
Appropriations and expenditures
2
Delegated legislation
2
Infrastructure (Economics) Finance
2
Roads Taxation
2
Auditing
1
Delivery of goods
1
Environmental permits
1
Federal aid to transportation States
1
Ferries
1
Ferries Access roads
1
Freight and freightage
1
Freight and freightage Economic aspects
1
Freight and freightage Environmental aspects
1
Freight and freightage Social aspects
1
Highway law
1
Infrastructure (Economics) Environmental aspects
1
Infrastructure (Economics) Evaluation
1
Infrastructure (Economics) States Finance
1
Local transit Finance
1
Roads
1
Roads Design and construction Government policy
1
Roads Finance Law and legislation
1
Roads Maintenance and repair
1
Rules and practice
1
Rural conditions Economic aspects
1
Rural development
1
Rural roads
1
Rural transportation
1
Traffic congestion
1
Traffic safety Finance
1
Traffic safety Government policy
1
Transportation Finance
1
Transportation Finance Law and legislation
1
Transportation Law and legislation
1
Transportation Planning
1
Transportation Planning Environmental aspects
1
Transportation Safety measures
1
Transportation and state Environmental aspects
1
Transportation, Automotive
1
User charges
1