What is SR Class 2SL?
{{Infobox train | background = #006600 | name = Southern Railway 2-SL | image = | imagealt = | imagesize = | caption = | interiorimage = | interiorimagealt = | interiorcaption = | service = 1929–1954 | manufacturer = | factory = Peckham Rye Works | family = | replaced = [[SR Class SL|South London Line stock]] | yearconstruction = 1929 | yearservice = May 1929 | refurbishment = | yearscrapped = | numberconstruction= | numberbuilt = 8 | numberservice = | numberpreserved = | numberscrapped = 8 | formation = DMBT+DTC | fleetnumbers = 1901–1908, later 1801–1808 | capacity = 16 first class,<br>108 third class | operator = [[Southern Railway (Great Britain)|Southern Railway]],<br>[[British Railways]] | depots = | lines = | carbody = | trainlength = {{convert|127|ft|2|in|m|2|abbr=on}} | carlength = | width = {{convert|9|ft|6|in|m|2|abbr=on}} | height = | floorheight = | platformheight = | entrylevelorstep = | art-sections = | doors = | maxspeed = | weight = | acceleration = | deceleration = | traction = Metropolitan-Vickers | poweroutput = {{convert|550|hp|kW|2|abbr=on}} | transmission = | aux = | powersupply = | hvac = | electricsystem = | collectionmethod = | uicclass = Bo′2′+2′2′ | aarwheels = | bogies = | brakes = Automatic air | safety = | coupling = Screw-link | multipleworking = Standard SR system | gauge = {{RailGauge|ussg}} }} The [[Southern Railway (UK)|Southern Railway (SR)]] gave the designation '''2SL''' to the small fleet of [[electric multiple unit]]s dedicated for use on the South London lines. None of these units survived long enough in [[British Rail]] ownership to be allocated a [[TOPS]] class.