Backup cameras have been federally mandated since 2019, but cars offer a range of useful additional tech to prevent rear collisions ranging from warning beeps to reverse automatic emergency braking.
Seven out of the eight SUVs tested in a recent Insurance Institute for Highway Safety study performed well in rear crash prevention tests.
The SUVs tested were rated on a scale of superior, advanced or basic. Of those, the Ford Escape, Honda CR-V, Mitsubishi Outlander and Subaru Forester got the agency’s highest rating of superior, while the Mazda CX-5, Toyota RAV4 and Volkswagen Taos achieved the middle advanced rating. The Hyundai Tucson earned a basic rating. Ratings apply both to the 2023 and ‘24 model years.
IIHS tested these vehicles’ systems over 24 different runs performed at 4 mph that included a passenger vehicle approaching at different angles, plus an additional test using an offset bollard representing a pole or garage pillar. A pedestrian dummy was not used as these systems are not designed to detect pedestrians
Superior- and advanced-rated vehicles include reverse automatic emergency braking, which applies the brake when a potential rear collision is detected. All of the superior-rated vehicles slowed before hitting the obstacles positioned behind them. However, the SUVs with reverse automatic emergency braking struggled the most with cars that were positioned at an angle behind them, and the Escape was no exception: Though it was the real “winner” in the study, avoiding collisions in all but one of the 24 tests, its lone crash was with a vehicle positioned at a 10-degree angle behind it.
The Forester had the next best performance in the test, passing all of the tests without a collision except for when a vehicle was positioned at a 45-degree angle behind it. Both the CR-V and Outlander collided with the vehicle behind them when it was at a 45- and 10-degree angle. The CR-V also hit the bollard, although its braking system slowed it down significantly before the hit.
The reverse automatic emergency braking systems on the advanced-rated CX-5, RAV4 and Taos were successful in stopping before hitting the bollard placed behind them; however, they failed to slow down for cars placed at a 10-degree angle to their rear. The SUVs often failed to slow down for the car placed at the 45-degree angle behind them, as well.
Only the Tucson scored the lowest basic rating in the test. Basic-rated vehicles only give a warning for potential rear crashes, either through a rear cross-traffic alert or sensors that give a warning beep.
