Driver's reminder appliance

A driver's reminder appliance (DRA) is a manual switch in the driving cab of a passenger train.

When operated it glows bright red and prevents the driver from being able to apply power.

[1] It was introduced in the design and operation of United Kingdom passenger trains in the 1990s[2] in response to a series of railway accidents where train drivers had passed a signal at danger when starting away from a station[3], a so-called "Start Against Signal"[4].

This signal might be hidden from view until the train is close to it and there is insufficient braking distance.

This United Kingdom rail transport related article is a stub.