Name
Title | ||
|---|---|---|
Development of a Control Strategy of Variable Speed Limits to Reduce Rear-End Collision Risks Near Freeway Recurrent Bottlenecks |
Abstract | ||
|---|---|---|
The primary objective of this paper was to develop a control strategy of variable speed limits (VSLs) to reduce rear-end collision risks near freeway recurrent bottlenecks. The risks of rear-end collisions were estimated using a crash risk prediction model that is specifically developed for rear-end collisions in freeway bottleneck areas. The effects of the VSL control strategy were evaluated using a cell transmission model. Several control factors were tested, including the start-up threshold of the collision likelihood, the target speed limit, the speed change rate, and the speed difference between adjacent links. A genetic algorithm was used to optimize critical control factors. For the high demand scenario, the proposed control strategy used 25% of the maximum collision likelihood for the start-up threshold, 35 mi/h for the target speed limit, 10 mi/h per 30 s for the speed change rate, and 10 mi/h for the speed difference between different links. For the moderate demand scenario, the strategy used 20% of the maximum collision likelihood for the start-up threshold, 40 mi/h for the target speed limit, 15 mi/h per 30 s for the speed change rate, and 10 mi/h for the speed difference between different links. The results of comparative analyses suggested that the proposed control strategy outperformed other strategies in reducing the rear-end collision risks near freeway recurrent bottlenecks. With the proposed control strategy, the VSL control reduced the rear-end crash potential by 69.84% for the high demand scenario and by 81.81% for the moderate demand scenario. |
Year | DOI | Venue |
|---|---|---|
2014 | 10.1109/TITS.2013.2293199 | IEEE Transactions on Intelligent Transportation Systems |
Keywords | Field | DocType |
rear-end collision risks reduction,road vehicles,control strategy development,variable speed limits (vsls),recurrent bottleneck,control strategy,freeway recurrent bottlenecks,rear-end collision,genetic algorithm,risk management,vsl,variable speed limits,crash risk prediction model,safety,collision avoidance,road traffic control,cell transmission model,occupational safety,genetic algorithms,kinematics,suicide prevention,detectors,human factors,predictive models,speed control,ergonomics,injury prevention,optimization | Bottleneck,Crash,Road traffic control,Cell Transmission Model,Rear-end collision,Simulation,Collision,Engineering,Speed limit,Electronic speed control | Journal |
Volume | Issue | ISSN |
15 | 2 | 1524-9050 |
Citations | PageRank | References |
11 | 0.97 | 7 |
Authors | ||
4 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Zhibin Li | 1 | 41 | 6.93 |
| Pan Liu | 2 | 36 | 6.75 |
| Wei Wang | 3 | 93 | 11.54 |
| Chengcheng Xu | 4 | 37 | 4.96 |