Research on Urban Road Network Mode Based on Queuing Theory

Abstract:

Based on the basic queuing theory in traffic engineering and the assumption that four kinds of road network modes under the same road land area ratio,a calculation was done on one vehicle’s total time-consuming changing trends along horizontal or vertical roads in four kinds of road network modes under the following two situations:keeping the same traffic arriving rate,changing road land area ratio;keeping the same road land area ratio,changing arriving rate.And then,total time-consuming and curves changing trends were compared and analyzed.Results show that low density and wide road network system (Mode 1) has some advantage in case of lower traffic arriving rate; When the traffic volume increases and leads to light congestion,the high density and one-way street network system (Mode 4) is the best.Key conclusions can directly guide road network planning.