Modeling Traffic Flow Problem Comparison Of Multilane Roundabout Versus Traffic Light Control

The vehicular traffic is controlled by a self-organized scheme in which traffic lightsrnare absent at traffic junctions. This controlling method incorporates a yield-at-entryrnstrategy for the vehicles approaching to the circulating traffic flow in the roundabout.rnVehicular dynamics are simulated within the framework of the probabilistic cellularrnautomata and the throughputs experienced at each individual street are evaluated forrnspecified time intervals to determine the performance of the roundabout. We usedrnMulti-stream Minimum Acceptable Space (MMAS) Cellular Automata (CA) modelrnfor the description of vehicular traffic at a roundabout. In this thesis inconsistencyrnof driver behavior and interactions in cross traffic at entrances of roundabouts arernsimulated by incorporation of four different categories of driver behavior (i.e., conservative, moderate, urgent and radical). Our results give the critical throughputrnin which the intersection should be controlled in a self-organized manner is approximately 4500vph. This proves that below certain congestion, the roundabout efficiency is higher than fixed-time signalized junction point. In general, average throughputs for two-lane roundabout are lower than the signalized intersection, even for a fixedtime signalization.

Get Full Work

Report copyright infringement or plagiarism