a railing placed alongside a stairway or road for safety.

A railing at the edge of a deck to prevent people from falling. A guardrail should be 36 to 42 inches above the deck.

a traffic barrier used to shield potentially hazardous areas

The top member of a balustrade system designed to keep people from falling off of an open balcony or staircase.

A protective railing designed to prevent people or objects from falling into open well, stairwell or other open spaces.

a barrier, usually of a post-and-beam construction located alongside a roadway, in medians and in front of hazards to prevent an errant vehicle from striking an obstacle or encountering a dangerous slope or drop-off.

A rail, usually of flexible metal, secured to uprights and erected as a barrier between or beside lanes of a highway.

1. A safety railing used as a barrier to prevent encroachment or accidental falling from heights. 2. In street or highway construction, a barrier to keep vehicles in their lanes. 3. A device for protecting a machine part or the operator of a machine.