British Rail Class 950

British Rail Class 950
British Rail Class 950
	950001 at Upton on 15 January 2014
Manufacturer	British Rail Engineering Limited
Built at	Holgate Road carriage works
Family name	Sprinter
Number built	1 set
Formation	2 cars
Fleet numbers	999600-999601
Operator(s)	Network Rail
Depot(s)	ZA (RTC) (1994)
Specifications
Maximum speed	75 mph (121 km/h)
Track gauge	1,435 mm (4 ft 8+1⁄2 in) standard gauge

The British Rail Class 950 is a diesel multiple unit that was purpose-built by British Rail Engineering Limited's Holgate Road carriage works for the British Rail Research Division for use as a track assessment unit. It is currently operated by Network Rail.

Description[]

Cab of 999600, showing the video camera and laser measurement equipment.

It was built in 1987 using the same bodyshell as the Class 150/1 Sprinters.^[2] It was originally classified as a Class 150, but was reclassified into the departmental series. As part of the privatisation of British Rail, it passed to Railtrack in 1994 and then Network Rail in 2002. The unit is formed of two driving motor vehicles. Individual carriages numbered as follows:

DM: 999600-999601

Current operations[]

Class 950 seen here at Hellifield after a run on The Bentham Line

The unit is currently painted in a plain overall yellow livery with Network Rail branding. It mostly works on branch lines, where the track quality is not good enough for larger and heavier track assessment stock. It is able to operate over most railway lines around Great Britain. The unit is based at the Railway Technical Centre in Derby.

British Rail class 950, unit 950001 with camera removed and 7 panels of LED lights fitted.

Fleet details[]

Class	Operator	No. Built	Year Built	Cars per Set	Unit nos.	Notes
950	Network Rail	1	1987	2	950001

References[]

^ ^a ^b Fox, Peter; Hughes, Barry (1994). DMUs & Channel Tunnel Stock. British Railways Pocket Book No.3 (7th ed.). Platform 5. p. 50-51. ISBN 9781872524597.
^ Sprinter track recorder handed-over to BR The Railway Magazine issue 1041 January 1988 page 9

[P5-1-1] Fox, Peter; Hughes, Barry (1994). DMUs & Channel Tunnel Stock. British Railways Pocket Book No.3 (7th ed.). Platform 5. p. 50-51. ISBN 9781872524597.

[2] Sprinter track recorder handed-over to BR The Railway Magazine issue 1041 January 1988 page 9

[1]

[2]

v t Departmental Self-propelled rail vehicles of the United Kingdom
Diesel Multiple Units	Class 901 (From Class 101) Class 950 (Similar to Class 150)
Electric Multiple Units	Class 910 (From Class 488) Class 920 (From Class 446) Class 935 (From Class 445)
Others	APT-E Multi-Purpose Vehicle New Measurement Train DB Cargo Company Train Caroline
Locomotives	British Rail Class 97
Diesel locomotives Electric locomotives Miscellaneous locomotives Diesel multiple units Electric multiple units Departmental multiple units see also Category:British Rail Departmental Units

v t British Rail diesel Sprinters
20 m:	Class 150 Class 151 Class 154 Class 950
23 m (Super Sprinter):	Class 153 Class 155 Class 156
23 m (Express Sprinter):	Class 158 Class 159
unbuilt:	Class 152 Class 157

v t Diesel and alternative fuel multiple units of Great Britain
Pre-TOPS	British United Traction Derby Lightweight Metro-Cammell Lightweight Railbus GWR railcars LMS railcars Pacerailer
First generation	100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131
Second generation	140 141 142 143 144 150 151 152 153 154 155 156 157 158 159 165 166 950
Post-privatisation	139 168 170 171 172 175 180 (II) 185 195 196 197
Diesel-electric	201 202 203 204 205 206 207 210 220 221 222 230 231 251 252 253 254 255
Alternative fuel	600 614
Bi-mode	755 756 768 769 799 800 802 805 810
First generation (Original TOPS)	140 141 142 143 144 145 147 148 149 150 160 161 162 163 164 166 167 168 169 171 172 173 175 176 177 178 179 180 182 183 185 186 188 189 190
Diesel-electric (Original TOPS)	201 /1 /2 /3 202 /1 /2 /3 203 211 /1 /2 /3 212 221 /1 /2 /3 222 /1 /2 223 /1 /2 /3 224 225 251 261
Southern Region designations	2H 3D 3H 3R 3T 4L 6B 6L 6S
Design families	Mark 3-derived A-Train Civity Coradia D-Train Desiro FLIRT HST Networker Pacer PPM Sprinter Turbostar Voyager
British railcars and diesel multiple units Diesel locomotives Electric locomotives Miscellaneous locomotives Diesel multiple units Electric multiple units Departmental multiple units Rolling stock of Network SouthEast