Large-Scale Field Testing of a Real-Time Freeway Network Traffic State Estimator in South Italy

Abstract

This paper addresses a large-scale field test of a real-time freeway network traffic state estimator that was recently developed. The related network traffic flow modeling and state estimator design are first outlined. The test of the estimator for the A3 freeway of 100 km between Naples and Salerno in south Italy is then reported in some detail. The obtained results are deemed quite satisfactory and promising for further future implementations of this traffic state estimation tool. 1. Yibing Wang is with the Institute

Real-Time Freeway Network Traffic Surveillance: Large-Scale Field-Testing Results in Southern Italy

“…6(b)], and the estimate of the sole free speed that was defined for the whole network tends to follow the "typical" speed level, giving rise to the estimation bias at D11014. See [30] and [31] for more estimation results that were obtained with the traffic flow inhomogeneity ignored. The flow estimates at the toll station D5 is presented in Fig.…”