0 a bar along the edge of something steep, such as stairs or a cliff, to prevent people from falling off
Conversely, a vehicle could go through a guard rail and land on a railway line when an express train was passing.
Moreover, there must be a guard rail to keep the stock off the fences while they are growing.
If there is a risk of a fall of more than five feet, the deck of a thresher must have a guard rail.
He referred to the usefulness of a guard rail 3 ft.
The guard rail at the top is rusting due to age from the elements.
Bargo 1 almost rolled but was stopped by the side guard rail.
Later that evening, the team bus broke through a guard rail on a mountain pass, plunged down a hill, and crashed.
He backed into a guard rail afterward but was unhurt.
