There are around 2 million rear end collisions annually in the United States. These collisions kill approximately 15,000 – 20,000 people and injure an additional 500,000.
One NHTSA report about rear end crashes says they are the most common type of car crash, accounting for roughly 29% of all crashes. A meta-analysis of rear end collisions and concussions found that rear end crashes account for 40% of all accidents.
Rear end accidents are not only a regular occurrence on our roadways, but they’re also a top cause of injuries, fatalities, and property damage. The National Transportation Safety Board (NTSB) estimates that 80% of rear end collision deaths and injuries could be prevented by collision avoidance systems, which are available on many new cars (but not required).
Rear End Accidents and Distracted Driving
A collision avoidance system could do what many drivers these days fail to do: pay attention to what’s going on in front of them. When NHTSA analyzed more than 6,000 rear end crashes, it found that around 87 percent of rear end collisions involved driver distraction.
When a driver’s attention is focused away from the road in front of them, they have slower reaction times. One of the key contributors to rear end distracted driver crashes is what NHTSA calls “long glances” away from the forward roadway, or glances lasting longer than 2 seconds.
Not coincidentally, research from Liberty Mutual shows that taking your eyes off the road for 2 seconds—the amount of time it takes to glance at a smartphone or navigation screen—can have a profound effect on a driver’s ability to see an upcoming hazard. Research from Oregon State University found that taking your eyes off the road for 2 seconds increase the risk of a crash up to 24 times.
At 55 mph, a vehicle travels about 80 feet per second, or 160 feet in two seconds. When texting—which takes a driver’s eyes off the road for 5 seconds—a driver travels the equivalent of a football field without looking.
Other Causes of Rear End Car Crashes
While most rear end accidents are caused by distracted driving, the following unsafe driving behavior can also raise the chances of a rear end accident:
- Speeding: The faster a vehicle is moving, the longer it takes to slow down and come to a full stop.
- Following too close: Increased following distance gives a trailing vehicle more time to recognize a hazard, such as a stopped vehicle, and react. Tailgating, or leaving insufficient space between the lead driver and the rear driver, provides almost no margin for error if the lead car stops suddenly.
- Drug and alcohol use: Alcohol and other depressant drugs slow a driver’s reaction time.
- Not driving to conditions: During inclement weather, drivers should drive to the road conditions (e.g., speed should be decreased and following distance should be increased).
- Mechanical failure: Faulty brakes could increase stopping distance and result in a rear end accident, but unless the malfunction was caused by a manufacturer defect or botched repair job, it is typically the responsibility of owners to keep their vehicles in good working order.