Development of an automatic brake test (ABT) valve for use on 2-pipe air-braked freight trains (TM-BS-14)

The Transport Technology Assessment Group of the Research and Development Division has proposed the use of an Automatic Brake Test (ABT) valve to reduce the run-round time for 2-pipe air-braked freight trains. Included in their preliminary report are details of cost and time savings anticipated from the use of such...