Better engineering has made the front seat much safer in head-on collisions. But the back seat hasn't kept pace. It's a problem one vehicle safety group is trying to solve.

The IIHS' new rear impact test exposes weaknesses in vehicle safety designs, with only four models earning a 'Good' rating.

(AP) - The U.S. government announced major design changes it wants to implement to make the female version of the vehicle crash test dummy more lifelike, potentially replacing a model used for decades ...

The updated test presents a new challenge for carmakers, but could make this common injury less likely in future vehicles.