SUBJECT
Management
Highway departments
13
Roads
11
Transportation
9
Maintenance and repair
8
Data processing
5
Express highways
4
Planning
4
States
4
Traffic congestion
4
Transportation agencies
4
Bridges
3
Prevention
3
Traffic flow
3
Design and construction
2
Electronic traffic controls
2
Emergency transportation
2
Highway communications
2
Management information systems
2
Pavements
2
Research
2
Security measures
2
Terrorism
2
Traffic accidents
2
Traffic engineering
2
Traffic safety
2
Transportation and state
2
Urban transportation
2
Accounting
1
Archaeology
1
Archaeology and state
1
Asset management
1
Asset-liability management
1
Benchmarking (Management)
1
Communication systems
1
Commuting traffic
1
Computer programs
1
Configuration management
1
Cost control
1
Depreciation
1
Disabled vehicles on express highways
1
Environmental aspects
1
Equipment and supplies
1
Finance
1
Freight and freightage
1
Geographic information systems
1
Highway engineering
1
Highway planning
1
Information storage and retrieval systems
1
Infrastructure
1
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