clearance car

More recently, clearance cars using lasers for measurement have come into service.

Low clearance cars might want to park here, while others may continue up the last tenth of a mile to the trailhead.

The clearance car allowed accurate and speedy measurement of the clearances for a structure.

A clearance car is a type of railroad car in maintenance of way service.

Clearance car, special car to check for obstructions.

Equipped with a high clearance car deck and railway tracks, allowing her to accommodate the growing rail and truck traffic.

MOW equipment page 11 at North East Rails, including several clearance cars.

Later clearance cars functioned by using physical feelers-rods which extended from the car in all directions which would be deflected back by obstructions.

Compliance with a loading gauge can be checked with a clearance car which in the past were simple wooden frames or physical feelers mounted on rolling stock.

Early clearance cars simply consisted of an outline of the system loading gauge attached to a railroad car, which would be towed along the route to ensure the clearances were still sufficient.

Bishton level crossing in Wales is unusual in that it is partly replaced by an underpass for low clearance cars, leaving the level crossing for high clearance trucks.

Article on the Pennsylvania Railroad clearance car at the Pennsylvania Railroad Technical and Historical Society's site, written by a former clearance car crewmember.