Responsibility will include analyzing single and multiple vehicle collisions, performing damage analysis, speed analysis, roadway drag factors or coefficient of friction of roadway, perception and response times, lamp analysis, time-distance relationships, occupant kinematics, vehicle dynamics, braking efficiency of air brake systems on commercial motor vehicles and possibly intersection traffic signal analysis. Performing damage analysis, speeds from damage (energy), coefficient of friction of roadway, time and distance relationships, lamp analysis, occupant kinematics, vehicle dynamics, perception and response times, braking efficiency of air brake systems on commercial motor vehicles, and possibly intersection traffic signal analysis.