Business & Economics
Alternative Fuels
100%
Alternative Fuel Vehicles
69%
Natural Gas Vehicles
25%
Driver Behavior
22%
Location Model
18%
Travel Time
16%
Metropolitan Areas
14%
Empirical Data
12%
Deviation
12%
Roads
12%
Planning
11%
Destination
11%
Earth & Environmental Sciences
alternative fuel
94%
station
41%
vehicle
33%
natural gas
18%
infrastructure
15%
travel time
10%
metropolitan area
10%
GIS
8%
road
7%
planning
6%
need
5%
Engineering & Materials Science
Alternative fuels
83%
Compressed natural gas
40%
Natural gas vehicles
22%
Travel time
15%
Geographic information systems
15%
Planning
9%
Social Sciences
driver
61%
natural gas
23%
infrastructure
17%
Geographical Information System
13%
agglomeration area
11%
travel
10%
road
10%
candidacy
9%
planning
7%
time
4%