Maintenance of Way

commonly abbreviated MOW

by Ivan W. Baugh

The roadbed, which includes the rails, ties, and the foundation on which they rest, require maintenance in order to support the weight of the trains and their speed. When problems develop with the roadbed, trains must travel at reduced speeds to limit the stress in order to avoid derailments.

MOW equipment includes a variety of specialized equipment.

Maintenance Of Way is an expense for any railroad. Without maintenance of way, the safety of the track diminishes and derailments occur. If a derailed train carries toxic chemicals, this can disrupt the lives of people living in the proximity of the rail line. The railroad bears the expenses incurred by people who must vacate their homes following a hazardous incidence such as a spill or a discharge of contents into the air. Not only must the roadbed be carefully maintained, the equipment that will run on the track must also requires regular maintenance. This is why railroads have car inspection equipment that checks for potential problems as a train passes. Formerly, this was done by an employee who visually examined the cars as they passed. If they identified a problem, a message was sent ahead to stop the train. Today, this is done by trackside inspection equipment that checks for hot boxes, problem wheels, etc.