Sprinter (train family)

Sprinter (train family)
Name	Sprinter
Service	1980s–present
Manufacturer	British Rail manufacturers
Yearservice	1984
Operator	British Rail Network Rail Northern Trains TransPennine Express Thameslink East Midlands Railway ScotRail Greater Anglia West Midlands Trains West Coast Railway Company Arriva FirstGroup Stagecoach Group Serco Transport for Wales Government of the United Kingdom
Carbody	steel
Maxspeed	75–100 mph
Traction	diesel multiple unit engines
Gauge	1435 mm

Sprinter (train family) The Sprinter family is a series of British diesel multiple unit rail vehicles introduced in the 1980s to replace first-generation British Rail DMUs, mark a shift in regional passenger rail rolling stock, and underpin services on rural, suburban, and inter-urban routes. Developed during the era of sectorisation and introduced under the auspices of British Rail Engineering Limited and other manufacturers, Sprinters were deployed by a wide range of operators across England, Scotland, and Wales, influencing subsequent UK rolling stock strategies and depot practices.

Introduction

The Sprinter programme originated amid refurbishment and replacement programmes undertaken by British Rail and stakeholder bodies such as the Ministry of Transport and later the Department for Transport. Designed alongside contemporaries like the Pacer and followed by families such as Juniper and Desiro units, Sprinters were intended to improve reliability on routes once served by ageing vehicles linked to operators including Regional Railways and InterCity. Initial procurement decisions involved negotiations with manufacturers tied to industrial entities such as BREL and private firms that later became part of conglomerates like British Aerospace and GEC.

Design and Technical Characteristics

Sprinters feature integral multiple unit construction with welded steel car bodies, high-power diesel engines, hydraulic or electric transmission systems, and standard 1435 mm standard gauge bogies adapted for UK loading gauge restrictions. Key technical attributes include air brakes, electro-pneumatic controls, passenger accommodation designed to comply with contemporary RSSB guidelines, and modular components for easier maintenance at depots such as Heaton TMD, Laira Depot, and Longsight Electric TMD. Onboard systems were influenced by suppliers linked to Rolls-Royce powerplants, Cummins engines, Voith transmissions, and Siemens-type electrical subsystems, with safety features coordinated with Railtrack and later Network Rail signalling practices.

Variants and Models

The family includes several classes introduced under the British Rail numbering scheme, notably Class 150, Class 153, Class 155, Class 156, and Class 158, each with distinct seating layouts, top speeds, and technical fit. Subsequent related types and conversions led to units such as Class 159 used by South Western Railway successor franchises, and later derivatives that informed designs like Class 170 from Adtranz and Bombardier. Manufacturing involved yards and companies such as Derby Litchurch Lane Works, York Works, BREL Workington, and private sector firms that merged into entities like Alstom and Siemens Mobility.

Service History and Operators

Sprinters entered service during the 1980s and 1990s across networks managed by British Rail sectors and later by post-privatisation franchisees including Northern Rail, ScotRail, Wales & West, East Coast Main Line Company, Silverlink, and later by companies such as Arriva Trains Northern and First Great Western. They have operated on routes including the Tyne Valley Line, Cumbrian Coast Line, Settle–Carlisle line, West Coast Main Line branch services, and commuter corridors serving Manchester Piccadilly, Birmingham New Street, Leeds and Glasgow Central. Depot allocations and maintenance regimes were coordinated with infrastructure bodies such as Rail Safety and Standards Board and franchise commitments overseen by the Office of Rail and Road and ministerial departments.

Accidents and Incidents

Throughout decades of service, Sprinter units have been involved in notable incidents recorded by investigating authorities like the Rail Accident Investigation Branch and its predecessors, prompting safety reviews and vehicle modifications. Incidents affecting Sprinter units occurred in locations linked to lines such as the Paddington approaches, interchanges near Crewe, collisions at level crossings along rural routes, and derailments on lines like the Midland Main Line branches. Investigations led to recommendations impacting signalling interfaces with operators including Network Rail and franchise holders such as Northern Trains and East Midlands Railway.

Refurbishments and Upgrades

Multiple mid-life refurbishments were undertaken by franchisees and rolling stock leasing companies including Angel Trains, Porterbrook, and Eversholt Rail Group, incorporating interior renewals, accessibility improvements to align with the Rail Vehicle Accessibility Regulations, installation of real-time passenger information, CCTV systems, modified cab panels to comply with TPWS and AWS requirements, and upgrades to engines and transmissions often involving manufacturers like MTU and Deutz. Some refurbishments converted two-car sets to single-car operations (e.g., Class 153 derived from Class 155), while others refitted air-conditioning and passenger amenities to meet franchise specifications for operators such as TransPennine Express and Greater Anglia.

Preservation and Legacy

Several Sprinter units have been preserved by heritage railways and preservation groups including the Midland Railway Centre, North Yorkshire Moors Railway, and private preservation societies maintained by volunteers and organizations that also manage historic depots like Barry Scrapyard survivors. The family’s legacy persists in influencing rolling stock procurement policies by the Department for Transport, technical standards promulgated by the Rail Safety and Standards Board, and the future design principles seen in fleets such as Class 195 and Class 196 DMUs operated by contemporary franchises. Sprinters remain a subject of study in publications by entities like Rail Magazine and archival collections at institutions including the National Railway Museum.

Category:British diesel multiple units