SUBJECT
Maintenance and repair
146
Roads
142
Pavements
22
Safety measures
19
Management
18
Design and construction
15
Bridges
10
Highway departments
9
Deterioration
8
Finance
8
Traffic signs and signals
7
Employees
6
Personnel management
6
Transportation
6
Philippines. Department of Public Works and Highways
5
Addresses, essays, lectures
4
Congresses
4
Data processing
4
Economic aspects
4
Government policy
4
Rural roads
4
Snow and ice control
4
Costs
3
Design
3
Hazardous substances
3
Maintenence and repair
3
Planning
3
Road markings
3
Road work zones
3
Toll roads
3
Traffic safety
3
Cost of operation
2
Decentralization in government
2
Environmental aspects
2
Equipment and supplies
2
Evaluation
2
Express highways
2
Fees
2
MacArthur Highway (Central Luzon)
2
Materials
2
Mathematical models
2
Motor vehicles
2
Pavements, Concrete
2
Public works
2
Road
2
Road machinery
2
Roads maintenance and repair
2
Streets
2
Testing
2
Traffic flow
2
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