1.   But the stiff frame rails in such trucks are more likely to heavily damage other vehicles and injure the passengers, says Hazelbaker.

2.   Claudepierre said that by changing the frame rails the company had found a surprisingly simple and inexpensive solution to the problem of sport utility damage to other vehicles.

3.   Consumer groups claim the position of the tanks -- outside the frame rails -- makes the trucks more likely to catch fire in accidents.

4.   Ford took the unusual step of mounting the rear suspension through holes in the frame rails.

5.   Frame rails look like two railroad rails, only they curve up and down somewhat from the front to the back of the vehicle.

6.   Ford installed energy-absorbing, horizontal steel bars last year below the bumpers of its immense Ford Excursion, which has very high frame rails.

7.   Some automakers have begun lowering the frame rails of their sport utilities.

8.   The beam is designed to engage the frame rails of a car in the event of a collision, preventing the Excursion from riding up and over the car.

9.   The foot-long segments of the frame rails in front of the front cross bar are known as the frame horns.

10.   They claim the company designed the tanks outside the frame rails of the truck to boost fuel capacity for marketing reasons with little regard for safety.