Business & Economics
Navigation
81%
Roads
58%
Acceptability
38%
Pricing
23%
Polluter-Pays Principle
18%
Technology Readiness
15%
System Architecture
14%
Fees
13%
Transport Infrastructure
13%
Dynamic Pricing
13%
Revenue
12%
Congestion
11%
Switzerland
11%
Norway
11%
Research Directions
10%
Singapore
10%
Germany
8%
Costs
4%
Earth & Environmental Sciences
GNSS
72%
road
50%
public
28%
polluter pays principle
22%
fee
16%
congestion
16%
electronics
11%
infrastructure
10%
city
7%
cost
7%
Social Sciences
road user
100%
pricing
40%
polluter pays principle
15%
Switzerland
9%
fee
9%
Singapore
9%
Norway
9%
revenue
8%
Federal Republic of Germany
7%
infrastructure
7%
electronics
7%
costs
5%
Engineering & Materials Science
Satellites
54%
Navigation
53%
Costs
26%