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In the steep uphill area of a tunnel in the city highway, because of the brightness environment coupled with gravity causes the drivers slowing down the speed unwarily. This will makes the average speed of vehicles reduce. Based on METANET model shows that this section can be equivalent to reducing lane bottleneck road, with traffic flow increases, the degree of congestion has catastrophe. The simulation...
Accidents in the highway always cause lane occupancy but may not cause congestion. This paper analyses the theory combined with vissim for simulation and matlab for data analysis, which finds that the relationship between highway bottlenecks and congestion can be explained by catastrophe theory. Relations of traffic flow parameters (flow rate — density) will result in sudden change. That means the...
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