For an adequate space cushion between your vehicle and the vehicle ahead of you, you should use the

Explanation

Four out of every ten crashes are rear-end collisions. And the main cause of rear-end collisions is tailgating (following too closely). For an adequate space cushion between your vehicle and the vehicle ahead of you, the New York State Department of Motor Vehicles Driver Manual recommends the two-second rule: At least two seconds should elapse from when the vehicle ahead of you passes some stationary object to when you reach that same object. Under poor or hazardous driving conditions, increase your space cushion to three or even four seconds.