Business & Economics
Public Transit
85%
Life Cycle Assessment
82%
Greenhouse Gases
72%
Policy Making
59%
Environmental Effects
37%
Life Cycle
27%
Smog
20%
Decision Maker
17%
Transportation Infrastructure
16%
Travel Behavior
15%
Marginal Effects
14%
Payback
14%
Confounding
14%
Automobile
14%
Normalization
14%
Energy Use
13%
Rail
13%
Greenhouse Gas Emissions
13%
Environmental Impact
11%
Production Process
11%
Car
10%
Energy
9%
Factors
4%
Earth & Environmental Sciences
greenhouse gas
55%
life cycle
52%
public
43%
policy
39%
environmental effect
32%
decision
30%
automobile
29%
infrastructure
23%
transportation infrastructure
21%
travel behavior
21%
smog
20%
emission factor
17%
energy use
17%
normalization
16%
energy production
16%
travel
14%
greenhouse gas emissions
14%
state of the art
13%
vehicle
12%
environmental impact
12%
services
10%
effect
3%
Social Sciences
life cycle assessment
100%
infrastructure
22%
time
22%
life cycle
21%
decision maker
19%
travel behavior
14%
energy production
13%
normalization
11%
motor vehicle
10%
environmental impact
10%
travel
9%
energy
7%
Engineering & Materials Science
Greenhouse gases
65%
Life cycle
55%
Environmental impact
46%
Gas emissions
16%
Automobiles
14%
Propulsion
14%
Rails
13%