SUBJECT
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Trucks
19
Additives
18
Iron and steel bridges
18
Passenger traffic
18
Railroads
18
Technological innovations
17
Visibility
17
Freight and freightage
16
Guard fences
16
Live loads
16
Measurement
16
Personnel management
16
Road markings
16
Cost effectiveness
15
Floors
15
Forecasting
15
Foundations
15
Highway communications
15
Soil mechanics
15
Automobiles
14
Economic aspects
14
Road drainage
14
Concrete
13
Highway planning
13
Intelligent transportation systems
13
Older automobile drivers
13
Prevention
13
Weight
13
Bituminous materials
12
Corrosion
12
Cracking
12
Equipment and supplies
12
Foundations and piers
12
Information storage and retrieval systems
12
Joints
12
Paratransit services
12
People with disabilities
12
Road construction workers
12
Skidding
12
Traffic estimation
12
Trip generation
12
Land use
11
Pavements, Bituminous
11
Pedestrian facilities design
11
Soil stabilization
11
Transportation planning
11
Transportation, Automotive
11
Containerization
10
Costs
10
Exhaust gas
10
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