Based on the formation mechanism and calculation model of the inner wheel difference of the right turn of motor vehicles, the variation of the inner wheel difference under the conditions of typical vehicle wheelbase and turning radius of curbs is analyzed. Under the cross-section combination of non motorized lanes, simulation and comparative evaluation of the conflict between the right turn of motor vehicles and non motorized vehicles and pedestrians is carried out and puts forward corresponding suggestions and measures, providing design reference for preventing right turn accidents at intersections.