Although three types of models are available to estimate minor traffic movement delays at two-way stop-controlled (TWSC) intersections, none of them adequately handle the condition in which the main street contains multi-lane approaches. This paper presents a methodology to estimate the average delays of left- and right-turn movements from a minor street at TWSC intersections onto multi-lane arterials. Approximately 300 hours of field data were collected at 8 unsignalized intersections in the Tampa Bay, Florida area. Using a regression analysis, empirical models were developed to estimate average delays of right-turn and left-turn movements from a driveway or side street. The models can be used to perform operational analysis of an unsignalized intersection on multi-lane arterials. Limitations of the model are discussed.
Abstract