Inside IIHS: Rear testing for whiplash prevention

Always adjust your head rest up all the way...

If you're about to get rear ended, would it be easier on your body to hold the brake or release the brake. What are the g load differences?

I'm something of a rear end tester myself.

It would be very interesting for the IIHS to create a genuine rear end crash test. 40 MPH, just like the frontal crash tests.

希望能增加實車撞擊測試後座也放置假人查看受傷程度，以後方40%以時速48km/h,採用4200磅＆100%全寬撞擊以時速38km/hr採用3300磅的測試車臺測試車輛安全性。
Hopefully the IIHS can increase the real car crash test rear seat also placed dummy to see the degree of injury to the rear 40% at 48km/h, using 4200 pounds & 100% full-width crash at 38km/hr using 3300 pounds of the test platform to test the safety of the vehicle.

there's a technnology that adjust automaticly the head rest when imminent collision coming, the technologie is part of ADAS ( ADVANCED DRIVER ASSISTANCE SYSTEM) that use radar sensor and camera.

It's amazing how many headrests on older cars are not adequate enough for rear-end protection.