Air brake question
Author: whoosh
Date: 11-09-2016 - 18:32
Are there any locations in the U.S. where retainers are required to be set before proceeding down the grade? If so, where and how steep is the grade. I never hear or read of using retainers any more, but have recently heard trains instructed to check a car's retainer valve when a train has been stopped for a car with hot wheels.