Experimental Studies of Mean Fully Developed Deceleration in L1 Vehicles

There are currently no updated databases in world practice that provide an expert, while conducting road (vehicle) accident analysis or examination, with the data on braking performance, particularly, mean fully developed deceleration and its response time, in Ll category of vehicles which would be as reflective of pre-accident road situation as possible. Within the framework of this work, on the basis of the Institute of Road Safety (IBDD) of SPbGASU, the authors investigated the patterns of change in the steady deceleration (both average and maximum), the time of increase in deceleration of motor vehicles of Russian production. Based on experimental data, for each studied vehicle of category Ll, the authors determined the nature of the change in steady-state deceleration at different degrees of load, braking mode, depending on the condition of the road surface and obtained polynomial curves in the form of regression equations.