以下でアクセス： 23 11月, 2016
The TomTom Traffic Index measures congestion on the road networks of 295 cities around the world.
The Traffic Index gives drivers detailed information on the impact congestion has on their city's travel times.
Road authorities can use the TomTom Traffic Index to measure the performance of their network and pinpoint areas where traffic flow can be improved.
Over the years we have built up a database with 14 trillion historical travel time measurements and we provide detailed and accurate traffic updates for drivers in 50 countries.