Engineering & Materials Science
Education
100%
Costs
67%
High occupancy vehicle lanes
51%
Taxation
45%
Highway administration
41%
Demonstrations
32%
Telephone
30%
Geographic information systems
30%
Supply chains
29%
Governors
26%
Economics
25%
Systems analysis
22%
Toll collection
22%
Planning
18%
Transponders
17%
Telecommuting
16%
Toll highways
14%
Lead
13%
Electric vehicles
13%
Feedback
9%
Gases
8%
Communication
7%
Testing
7%
Industry
6%
Biofuels
5%
Agriculture
5%
Social Sciences
emergency services
38%
reporting system
36%
taxes
31%
motor vehicle
29%
traffic
28%
road
25%
rural area
24%
death
21%
funding
20%
legislation
19%
leadership
19%
engineering
17%
cause
17%
examination
17%
participation
15%
resources
12%
revenue
10%
taxes
10%
education
9%
staff
7%
tax system
7%
economic efficiency
7%
social equities
7%
erosion
6%
economic planning
5%
economics
5%
Business & Economics
Fuel Tax
41%
Industry Cluster
35%
Funding
29%
Competitiveness
21%
United States of America
13%
Trucks
9%
Revenue
8%
Rail
8%
Economic Development
8%
Air
6%
Political Feasibility
6%
Tax System
6%
Location Quotient
6%
Air Transportation
5%
Processed Foods
5%
Qualitative Techniques
5%
Social Equity
5%
Transportation Networks
5%
Denial
5%