British Rail Class 144

class of 23 British 3-car railbuses

The British Rail Class 144 "Pacer" diesel multiple units (DMUs) were built by BREL Derby from 1986-1987. A total of 23 units were built, replacing many of the earlier First-generation "Heritage" DMUs.

British Rail Class 144 "Pacer"
144017 at York.JPG
Class 144, unit number 144017 at York railway station on 3rd June 2004.
In service1986 - 2020
ManufacturerBREL Derby and Walter Alexander
Family namePacer
Refurbishment2002 - 2004 - and 2010 2015 became 144e
Number built23
FormationDMS(+MS)+DMSL
Operator(s)Northern Rail first great Western
Line(s) servedHarrogate Line, Huddersfield Line, Hallam Line, Pontefract Line, York & Selby Lines
Specifications
Maximum speed75MPH
Prime mover(s)Cummins LTA10-R (Originally Leyland TL11)
Safety system(s)AWS, TPWS
Track gauge1435 mm (4 ft 8½ in)