Safety time in critical gap of left turn manoeuvre from priority approach at TWSC unsignalized intersections

The current models are based on the estimation of safety time ts. This paper presents development of a detailed mathematical procedure for calculation form of safety time ts. The mathematical procedure is based on the theory of probability. Measurements at unsignalized intersections had proven applicability of the proposed model, possibility of calculation subjective safety time and high participation of safety time ts in critical gap tc (about one third). The obtained results are highly consistent with HCM.