Title :
Determination of optimal successor function in phase-based control using neural network
Author :
Wong, S.C. ; Law, W.H. ; Tong, C.O.
Author_Institution :
Dept. of Civil & Structural Eng., Hong Kong Univ., Hong Kong
Abstract :
A phase-based method for fixed-time signal control of traffic improves significantly the junction performance over conventional stage-based method of control due to the higher flexibility in specification of signal timings, where the control variables comprise the start and duration of green phases and the cycle time at which the junction is operated. The cycle-structure is specified by a successor function, a combination of 0 and 1 for all incompatible pairs of phases, which indicates the order of phases in a cycle. Normal procedure optimises the timings for each of these successor functions to determine the best timing plan. The computing time is found to be approximately proportional the number of such functions. To reduce the computational requirement, and hence enhance its applicability to real-time actuated control, a neural network is employed to help identify the optimal successor function for further optimisation of timings. Encouraging results were obtained
Keywords :
backpropagation; feedforward neural nets; neurocontrollers; optimisation; road traffic; signalling; traffic control; backpropagation; cycle time; feedforward neural network; fixed-time traffic signal control; optimal successor function; optimisation; phase-based control; road junction; Artificial neural networks; Communication system traffic control; Computer networks; Delay; Intelligent networks; Neural networks; Optimal control; Structural engineering; Telecommunication traffic; Timing;
Conference_Titel :
Intelligent Vehicles Symposium, 1996., Proceedings of the 1996 IEEE
Conference_Location :
Tokyo
Print_ISBN :
0-7803-3652-6
DOI :
10.1109/IVS.1996.566364
