Traffic congestion
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 Traffic congestion on Marginal Pinheiros, near downtown São Paulo. According to Time magazine, São Paulo has the world's worst traffic jams. Drivers are informed through variable message signs the prevailing queue length. |
Traffic congestion is a condition on road networks that occurs as use increases, and is characterized by slower speeds, longer trip times, and increased vehicular queueing. The most common example is the physical use of roads by vehicles. When traffic demand is great enough that the interaction between vehicles slows the speed of the traffic stream, this results in some congestion. As demand approaches the capacity of a road (or of the intersections along the road), extreme traffic congestion sets in. When vehicles are fully stopped for periods of time, this is colloquially known as a traffic jam or traffic snarl-up.
- Related: Gridlock, Peak car, Smeed's law, Traffic flow, Transims, Transportation forecasting, Traffic Message Channel, Three-phase traffic theory
| Institute of Transportation Engineers Institute of Transportation Engineers www.ite.org - Web |
| The Physics of Traffic Jams The Physics of Traffic Jams www.cactusconnects.co.uk/physics_of_traffic_jams - Web |
| How Traffic Works from HowStuffWorks.com How Traffic Works from HowStuffWorks.com auto.howstuffworks.com/traffic.htm - Web |
Gallery for «Traffic congestion»
Average relevance
| Traffic Bulldog - Commuter Advocacy Traffic Bulldog - Commuter Advocacy trafficbulldog.org - Web |
| Big Traffic Jams: A Photo Tour Big Traffic Jams: A Photo Tour www.life.com/.../0 - Web |
| Anatomy of a traffic jam Anatomy of a traffic jam www.davesgonemental.com/anatomy-of-a-traffic-jam/ - Web |
