Refer DP 225 – Sollinger Hütte SHD 1668
Specialized rail vehicle operated by Refer seen at Ermidas-Sado station , on the Sul line , in March 2008. This specialized rail vehicle, with fleet number DP 225, is built by Sollinger Hütte in 1982, designated as SHD 1668. It is used to transport infrastructure maintenance teams and is part of a series of 30 units placed into service by the Caminhos de Ferro Portugueses. Overall length (buffers) is 24.3 ft. This vehicle uses a Deutz "L6" diesel engine. It has two driving axles (B) and gauge is 5 ft 5 21⁄32 in. Top speed is approximately 37 mph. This specialized rail vehicle, generally known as a " draisine " (" drais + ine ", from Karl Freiherr von Drais , term adapted to Portuguese as " dresina ") is used to transport infrastructure maintenance teams and their equipment. Designated by the manufacturer as SHD 1668 (which, I presume, denotes a S ollinger H ütte D raisine for 1668 mm gauge), it has one driving stand used for both directions ...