Three more men sat on top, clinging to the low guard rails.

Or maybe built into the pattern of a guard rail.

The bus bounced off the car and through a guard rail.

There, men were at work beside a broken guard rail.

All he'd have to do was swing his legs over the guard rail.

On his right were a guard rail, empty air, and a tremendous view.

Her back hit the guard rail hard, and for a moment she found it difficult to breathe.

I stayed close to the wall; there wasn't any guard rail.

I could see the guard rail on the far side of the lip, but nothing else.

He found the car difficult to drive and crashed against a guard rail.