Business & Economics
Bus
93%
Safety
70%
Railroad
61%
Airlines
57%
Rail
40%
Deregulation
39%
Motor Carriers
37%
Revenue
37%
Trucking
36%
United States of America
35%
Operator
31%
Industry
30%
Airports
30%
Costs
29%
Congestion
26%
Social Welfare
25%
Minimum Quality Standards
20%
Fees
19%
Subsidies
19%
Per Capita Income
18%
Cost-benefit Analysis
18%
Hazard
18%
Roads
17%
Congestion Pricing
17%
Safety Regulations
17%
Structural Model
17%
Fatality
16%
Public Policy
16%
Elasticity
16%
Gasoline Prices
16%
Demand Response
15%
Price Elasticity of Demand
15%
Literature Review
14%
Statistical Analysis
14%
Short-run
14%
Scale Economies
14%
Toll
14%
Aviation
14%
Public Transport
14%
Evaluation
13%
Crash
13%
Economics
13%
Hub
12%
Income Level
12%
Income
12%
Market Structure
11%
Low Income
11%
Privatization
11%
Weather
10%
Casualties
10%
Social Sciences
pricing
100%
railroad
61%
costs
57%
industry
52%
deregulation
46%
airport
38%
flight
36%
revenue
34%
time of day
32%
firm
30%
demand
29%
death
28%
transit authority
24%
air traffic
24%
statistical analysis
23%
Safety regulations
21%
price elasticity
21%
subsidy
21%
social welfare
21%
road
20%
cost-benefit analysis
20%
public policy
19%
cause
19%
accident
18%
time
18%
income
18%
market
17%
driver
16%
travel
16%
fee
16%
affluence
16%
pedestrian
15%
public transport
14%
educational activities
13%
public education
13%
motor vehicle
12%
audit
12%
trend
12%
structural model
12%
economics
12%
regression
12%
law enforcement
11%
evaluation
11%
deficit
10%
productivity
10%
demand for information
9%
campaign
9%
financial performance
9%
damages
9%
Engineering & Materials Science
Deregulation
62%
Rails
60%
Railroads
57%
Industry
51%
Costs
48%
Elasticity
38%
Airports
32%
Accidents
25%
Economics
24%
Cost benefit analysis
21%
Time series analysis
21%
Inspection
19%
Risk perception
19%
Law enforcement
19%
Profitability
17%
Education
16%
Trucks
16%
Population Density
15%
Bicycles
15%
Statistical methods
14%
Automobiles
13%
Gasoline
12%
Hazards
11%
Managers
11%
Roadsides
10%
Productivity
10%
Personnel
9%
Civil aviation
9%
Hazardous materials
8%
Locomotives
7%
Insurance
7%
Finance
7%
Aviation
7%
Air
7%
Consolidation
6%
Oil tankers
6%
Compliance
5%