Road Design Types, Expected Queue Size and its Relief Times
Keywords:
Vehicular traffic queues, Road intersection, Roundabout, Relaxation and build-up times.Abstract
Most road networks are designed horizontally on the same plane and this often leads to intersections and conflicts. Vehicular traffic at a road junction and roundabout is examined. Queue theory models are discussed and applied to two road junction types, A T-junction and a roundabout. Expected road traffic build-up and relaxation times are presented. The time that must elapse for the system to return to free-flow state was calculated and results show that it takes longer time for traffic congestion to relax compared to its build up time. Road traffic build-up is higher in the T-junction than the roundabout.
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