Original front crash prevention: vehicle-to-vehicle
Discontinued test
The vehicle-to-vehicle front crash prevention test evaluates the effectiveness of forward collision warning and automatic emergency braking. The original version represented front-to-rear crash scenarios in which a vehicle approaches a passenger car that is stopped in the middle of the lane.
How the test was run
- A technician drove the test vehicle toward a stationary target designed to simulate the back of a passenger car without touching the brake pedal.
- A GPS system, onboard camera and other sensors recorded how much the vehicle slowed to avoid or mitigate a collision and other data.
- Multiple trials were conducted at speeds of 12 and 25 mph.
How vehicles were evaluated
- We awarded points based on how much the system slowed the vehicle to avoid hitting the target or lessen the severity of the impact.
- We also factored in the availability of forward collision warning that met criteria set by the National Highway Traffic Safety Administration.
Why we stopped conducting this test
We suspended our original vehicle-to-vehicle evaluation at the end of 2022 because virtually all new vehicles were performing well, in large part thanks to a voluntary commitment by automakers that IIHS helped broker. We launched a new, more challenging test in 2024 to address crashes that occur at higher speeds and involve vehicles other than passenger vehicles.
Original front crash prevention test protocol
For details on other current and discontinued tests, visit the About our tests page.