Many factors can go into determining who is at fault in a rear-end collision, especially if there was a vehicle failure or other extenuating circumstance. In most cases, however, it comes down to driver negligence, and the driver of the rear vehicle is almost always at fault. Even if the driver in front suddenly hits their brakes, Nevada law expects the driver in the rear to follow at a distance that gives them enough time to react and stop without hitting the car in front of them.