The real-time measurement of queue parameters is required in many traffic s
ituations such as accident and congestion monitoring and adjusting the timi
ngs of the traffic lights. Previous methods proposed by researchers for que
ue detection are based on traditional image processing algorithms. The meth
od proposed here is based on applying the combination of edge detection and
neural network algorithms. The edge detection technique is used to detect
vehicles and estimate the motion, while neural network is used to measure t
he queue parameters. The neural network is trained for various road traffic
conditions and is able to provide better results than the traditional imag
e processing algorithms. (C) 1999 Elsevier Science B.V. All rights reserved
.