In North Dakota, what is the recommended following distance behind the vehicle ahead of you?

Explanation

The North Dakota Noncommercial Drivers License Manual recommends the "three-second rule," a following distance of at least three seconds behind the vehicle in front of you. You can measure your following distance by noting when the vehicle in front of you passes some stationary object and then counting the seconds that elapse before you reach the same object. If driving conditions are poor or traffic is heavy, you should increase your following distance.