Leaders of the Insurance Institute for Highway Safety say only six of the SUV and pickups they tested have effective restraints that would keep someone's head and torso moving together during a 20 mile per hour rear end crash.
The institute tested seat head restraints in 44 current model SUVs and 15 pickups to see how well they protected passengers.
The Ford Freestyle, Honda Pilot, Jeep Grand Cherokee, Landrover HR3, Subaru Forester and the Volvo XC90 were considered good.
26 SUVs and nine pickups got a "poor" rating.
All of the vehicles tested meet federal safety standards.