British Rail Class 144
| British Rail Class 144 "Pacer" | |
|---|---|
 Class 144, unit number 144017 at York railway station on 3rd June 2004. | |
| In service | 1986 - 2020 |
| Manufacturer | BREL Derby and Walter Alexander |
| Family name | Pacer |
| Refurbishment | 2002 - 2004 - and 2010 2015 became 144e |
| Number built | 23 |
| Formation | DMS(+MS)+DMSL |
| Operator(s) | Northern Rail first great Western |
| Line(s) served | Harrogate Line, Huddersfield Line, Hallam Line, Pontefract Line, York & Selby Lines |
| Specifications | |
| Maximum speed | 75MPH |
| Prime mover(s) | Cummins LTA10-R (Originally Leyland TL11) |
| Safety system(s) | AWS, TPWS |
| Track gauge | 1435 mm (4 ft 8½ in) |
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.
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