Saloon cars one parking wait for the red light at the intersection. While waiting in the car ten wheel drive cars up go to overtake the red light smooth with a constant speed 16 m/s people driver saloon car thought the lights changed. Issuing vehicle the car with constant acceleration 4 m/s in 4s. Later a police ambush at an intersection thus driving motorcycle pursue both with constant acceleration. If the police want to be catching up while the coupe is about to overtake the truck fit. Police had to drive a motorcycle how much acceleration in m/s