| With the rapid economic development as well as automobile explosion in China, traffic congestion, exhaust pollution and traffic safety deterioration are becoming increasingly serious in urban areas. At present, infrastructure investment can hardly satisfy traffic demand. Moreover, intersections of urban traffic networks are main reasons for traffic disruption, accidents growth and delays, which lead to low capacity. Additionally, arterial coordinated control is considered as the key measure to alleviate traffic congestion and improve traffic efficiency. With effective arterial coordinated control, traffic networks can achieve uninterrupted flow and high capacity. Currently, arterial coordinated control has been put into practice in many countries as top priority. However, previous studies show some shortcomings, which can hardly accommodate complex traffic conditions. As a result, the following studies have been done.Firstly, the basic theory of urban traffic signal control is discussed. Next, signal timing of urban arterial coordinated control is discussed. The implementation basis and procedures are summarized. Moreover, signal timing of arterial coordinated control is divided into intersection layer and arterial layer. Additionally, according to the classification, optimized methods of arterial coordinated control based on MAXBAND algorithm are proposed, focusing on simplification of MAXBAND algorithm in different traffic conditions. According to two common traffic situations, double cycle signal control and the combination of each phase for an entrance and symmetry phase signal control are discussed based on MAXBAND algorithm. Respecting the above-mentioned studies, taking Liangqing Road as an example, the application example on signal timing of arterial coordination is discussed and analyzed. Lastly, compared with current timing plan and classical MAXBAND plan, the VISSIM simulation results show that the optimized methods of arterial coordination significantly reduce delays, queue length and stops. As a result, the feasibility and superiority of the methods are testified. |
