ABSTRACT
An original computational approach allowing the reliability and the availability assessments of the lane located at an intersection with traffic signals is presented and discussed in detail. Operation of the lane of this type is described using a probabilistic model of an alternating renewal process. The occurrence of queues with vehicles waiting for the change of the lights, but only in the cases when the number of these vehicles is observed to be at least equal to the arbitrarily accepted number relating to the critical congestion level, is treated as the lane’s failure. The proposed formal model is calibrated based on the empirical intensity function being a rate of occurrence of failures. The availability of the lane is interpreted as the probability that such lane will be serviceable at a predetermined time-point t, whereas its reliability—as the probability that it will be serviceable in the whole analysed time interval.
