In the
United Kingdom, a
traction maintenance depot, or
TMD, is a railway depot where
locomotives are serviced and maintained. A
traction and rolling stock maintenance depot, or
T&RSMD, is a maintenance depot where
locomotives,
multiple units and
rolling stock are serviced and maintained. Each rail locomotive in the UK is allocated to a depot. Traditionally, locomotives would have normally been maintained at the depot where they were allocated.