Arriva Trains Wales Class 142 at Cardiff Central in 2016
Arriva Trains Wales Class 142 interior in 2013
In service
1985–2020
Manufacturer
British Rail Engineering Limited
Leyland Vehicles Limited[1]
Order no.
31003 (DMS vehs. 55542–55591)[2]
31004 (DMSL vehs. 55592–55641)
31013 (DMS vehs. 55701–55746)
31014 (DMSL vehs. 55747–55792)
Built at
Derby Litchurch Lane Works
Family name
Pacer
Constructed
1985–1987
Refurbished
1997–2003
2008–2017
Number built
96
Number preserved
35
Number scrapped
60
Formation
2 vehicles per unit: DMS-DMSL[1]
Diagram
DMS vehicles: DP234
DMSL vehicles: DP235[2]
Fleet numbers
142001–142096[3]
Capacity
102[4] to 121 seats[1]
Specifications
Car body construction
Steel[1]
Car length
15.123 m (49 ft 7.4 in)[1]
Width
2.800 m (9 ft 2.2 in)[1]
Height
3.863 m (12 ft 8.1 in)[1]
Doors
Double-leaf folding (three per side)
Wheelbase
9.000 m (29 ft 6.3 in)[1]
Maximum speed
75 mph (121 km/h)[1]
Weight
As built;[1]
DMS vehs.: approx. 21.0 tonnes (20.7 long tons; 23.1 short tons)
DMSL vehs.: approx. 21.5 tonnes (21.2 long tons; 23.7 short tons)
After upgrade;[5]
DMS vehs.: 24.5 tonnes (24.1 long tons; 27.0 short tons)
DMSL vehs.: 25.0 tonnes (24.6 long tons; 27.6 short tons)
Prime mover(s)
As built: 2 × Leyland TL11[1]
After upgrade: 2 × Cummins LTA10-R[6]
(one per vehicle)
Engine type
Inline-6 4-stroke turbo-diesel[7][8]
Displacement
Leyland: 11.1 L (680 cu in)[7]
Cummins: 10.0 L (610 cu in)[8]
(per engine)
Power output
Leyland: 149 kW (200 hp)[9]
Cummins: 168 kW (225 hp)[6]
(per engine)
Transmission
As built: SCG RRE5 (4-sp. epicyclic)[9]
After upgrade: Voith T 211 r (hydrokinetic)[5]
Minimum turning radius
70 m (230 ft)[1]
Braking system(s)
Electro-pneumatic (tread)[5] ('Westcode')
Safety system(s)
AWS[1]
TPWS
Coupling system
BSI[5]
Multiple working
Within class, and with Classes 14x, 15x, and 170[5]
Track gauge
1,435 mm (4 ft 8+1⁄2 in) standard gauge
The British Rail Class 142 Pacer are diesel multiple-unit passenger trains built for British Rail (BR) from 1985 to 1987. They were built with a high level of commonality with the widely-used Leyland National bus. They are part of the Pacer family of railbuses. The last set was withdrawn from service in 2020.
^ abcdefghijklmVehicle Diagram Book No. 220 for Diesel Multiple Unit Trains (Railcars)(PDF). Derby: Mechanical & Electrical Engineering Department, British Railways Board. March 1987. DP234, DP235 (in work pp. 63–66). Archived from the original (PDF) on 21 January 2015 – via Barrowmore MRG.
^ abFox, Peter; Hughes, Barry (1994). British Railways Pocket Book No. 3: DMUs & Channel Tunnel Stock (7th ed.). Sheffield: Platform 5 Publishing. pp. 15–16, 25. ISBN 9781872524597.
^"Class 142". The Railway Centre. Archived from the original on 9 March 2005. Retrieved 1 February 2016.{{cite web}}: CS1 maint: unfit URL (link)
^"Passenger Focus response to Network Rail's North West Route Utilisation Strategy". Transport Focus. 11 January 2007. Archived from the original on 13 December 2020. Retrieved 1 December 2020.
^ abcde"Regional Passenger Trains: Class 142". London: Angel Trains. Archived from the original on 18 May 2018. Retrieved 22 December 2022.
^ abPritchard, R.N.; Fox, Peter (2009). British Railways Pocket Book No. 3: Diesel Multiple Units 2010. Sheffield: Platform 5 Publishing. p. 15. ISBN 978-1-902336-75-6. OCLC 614300319.
^ abLeyland Titan Technical Data(PDF). Southall: British Leyland UK. June 1978. Lit. No. 1683. Archived (PDF) from the original on 31 January 2022. Retrieved 21 December 2022.
^ abEngine Performance Curve LTA10-G2. Columbus, Indiana: Cummins Engine Company. 14 April 1997. FR-2254. Archived from the original (PDF) on 22 December 2022. Retrieved 22 December 2022.
^ abCite error: The named reference shore was invoked but never defined (see the help page).
and 28 Related for: British Rail Class 142 information
The BritishRailClass 141 is the first production model of the Pacer diesel multiple unit (DMU) railbus. During the 1980s, BritishRail (BR) was interested...
The BritishRailClass 77, also known as Class EM2, is a class of 1.5 kV DC, Co-Co electric locomotive. They were built by Metropolitan-Vickers in 1953–1954...
The BritishRailClass 140 was the prototype of the Pacer diesel multiple unit. It was constructed between 1979 and 1981 in response to a desire within...
The BritishRailClass 150 Sprinter is a class of diesel multiple-unit passenger trains, developed and built by BritishRail Engineering Limited at York...
The BritishRailClass 170 Turbostar is a British diesel multiple unit (DMU) passenger train designed and built by Adtranz, and later by Bombardier Transportation...
The BritishRailClass 143 is a diesel multiple-unit railbus, part of the Pacer family of passenger trains introduced between 1985 and 1986. During the...
The BritishRailClass 159 is a class of British diesel multiple unit passenger trains of the Sprinter family, built in 1989–1992 by BritishRail Engineering...
BritishRailClass 37 is a diesel-electric locomotive. Also known as the English Electric Type 3, the class was ordered as part of the BritishRail modernisation...
The BritishRailClasses 101 and 102 diesel-mechanical multiple units were built by Metro-Cammell at Washwood Heath in Birmingham, England from 1956 to...
The BritishRailClass 20, otherwise known as an English Electric Type 1, is a class of diesel-electric locomotive. In total, 228 locomotives in the class...
The BritishRailClass 87 is a type of electric locomotive designed and built by BritishRail Engineering Limited (BREL) between 1973 and 1975. A total...
Class 41 Class 43 Class 56 Class 58 Class 87 Class 89 Class 90 Class 91 Class 140 Class 141 Class142Class 150 Class 158 Class 159 Class 165 Class 166...
The BritishRailClass 158 Express Sprinter is a diesel multiple unit (DMU) passenger train. It is a member of the Sprinter series of regional trains,...
units used on BritishRail's Southern and Scottish Regions during the 1970s and early 1980s. They were forerunners of the BritishRail Second Generation...
The BritishRailClass 153 Super Sprinter are single-coach railcars converted from two-coach Class 155 diesel multiple units in the early 1990s. The class...
The BritishRailClass 144 Pacer is a diesel multiple unit (DMU) passenger train built at Derby between 1986 and 1987. BritishRail, seeking to procure...
The BritishRailClass 197 is a class of diesel multiple unit passenger train built by CAF, based on its Civity platform. They are operated by Transport...
The BritishRailClass 231 is a class of eleven diesel-electric multiple units of the FLIRT family, which have been built for Transport for Wales by Swiss...
The BritishRailClass 40 is a type of British railway diesel electric locomotive. A total of 200 were built by English Electric between 1958 and 1962...
The BritishRailClass 60 is a class of Co-Co heavy freight diesel-electric locomotives built by Brush Traction. They are nicknamed Tugs by rail enthusiasts...
The BritishRailClass 195 is a class of diesel multiple-unit passenger train from the Civity family manufactured by CAF, owned by Eversholt Rail Group...
The BritishRailClass 196 Civity is a class of diesel multiple unit built for West Midlands Trains by Spanish rolling stock manufacturer CAF. A total...
The BritishRailClass 769 Flex is a class of bi-mode multiple unit (BMU) converted by Brush Traction, and running in service with Northern Trains. The...
The BritishRailClass 710 Aventra is a class of electric multiple unit passenger trains built by Bombardier Transportation for use on the London Overground...
The BritishRailClass 800, branded as the Intercity Express Train (IET) by Great Western Railway (GWR) and Azuma by London North Eastern Railway (LNER)...
Global Information
