Four out of every ten crashes involve

Explanation

According to the New York State Department of Motor Vehicles Driver's Manual, four out of every ten crashes involve rear-end collisions. And the most frequent cause of rear-end collisions is tailgating (following the vehicle ahead too closely). The manual recommends that you keep at least a two-second following distance between your vehicle and the vehicle ahead of you. Under poor or hazardous driving conditions, you should increase your following distance.