SL X15p

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X15p
SL X15p (left) and X10p (right) in 2022
Manufacturer	Stadler Rail
Replaced	X10p/UBxp/UBp
Constructed	2017–
Number under construction	66 carriages (22 sets)
Formation	3-car sets (A-C-B)
Fleet numbers	701–722
Capacity	162 seats
Operators	Transdev (under contract from Storstockholms Lokaltrafik)
Depots	Vallentuna
Lines served	Roslagsbanan
Specifications
Train length	59.7 m (195 ft 10 in)
Width	2.75 m (9 ft 0 in)
Height	3.9 m (12 ft 10 in)
Floor height	665 mm (26.2 in)
Doors	2 / side / car
Wheel diameter	760 mm (30 in)
Wheelbase	2 m (6 ft 7 in)
Maximum speed	120 km/h (75 mph)
Traction motors	8 × TSA TMF 42-24-4 180 kW (240 hp)[1]
Power output	1,440 kW (1,930 hp)
Acceleration	0.95 m/s2 (3.1 ft/s2)
Electric system(s)	1,500 V DC (nominal) from overhead catenary
Current collector(s)	Pantograph
UIC classification	Bo′Bo′+2′2′+Bo′Bo′
Coupling system	Dellner
Track gauge	891 mm (2 ft 11+3⁄32 in) Swedish three foot
Notes/references
[2]

X15p is a class of narrow gauge electric multiple units to be operated by SL on the Roslag Railway.^[3] 22 3-car sets will be delivered from 2020 to increase capacity on the network; the first of which were delivered in autumn 2020. Testing of the trains has been going on since then and the first train entered service on 31 October 2023.^[4] The name follows Swedish tradition for rail vehicle names, in which X means electric multiple unit, and the last p means 891 mm gauge.

A new depot, Vallentunadepån, has been constructed near Molnby, about 3,5 kilometers north of Vallentuna, in order to house the new trains. The depot contains space for all of the 22 new trains, with the ability to conduct maintenance on them as well. The older X10p rolling stock will still be housed at the depot in Mörby. ^[5]