The purpose of designing dedicated lanes for ground public transport is to reduce travel time and create the most comfortable conditions for users (passengers) compared to personal cars or other modes of transport. One of the design problems is the presence of right turns and pedestrian crossings on the route, which can largely determine the speed of ground public transport vehicles that differ from the designed one. There are three typical design schemes for right turns in the presence of a dedicated lane: traffic light regulation of the organization of the right turn; uncontrolled intersection, free from possible delays; uncontrolled intersection in the organization of pedestrian traffic, which ultimately determines the time delays of the ground public transport when vehicles are located in a dedicated lane, waiting for an acceptable headway between pedestrians. Traffic rules of most countries of the world provide for the highest priority for pedestrian traffic, including on uncontrolled pedestrian crossings. This situation increases the level of safety and service for pedestrians, but at the same time reduces the level of service of road for traffic flow. The article presents a methodology for assessing the impact of pedestrians on vehicle delays at an unregulated intersection with a dedicated lane for vehicles based on a probabilistic model. The simulation results showed that the discrepancies between the values of the model and the observed delays do not exceed 22% when the pedestrian traffic intensity is less than 1500 ped/h. Based on the results obtained, recommendations are proposed to minimize the delay of vehicles at unregulated intersections, including the ground public transport vehicles on a dedicated lane.