Buuxi weedhan soo socota: Werner von Siemens ayaa soo bandhigay tareenkii ugu horreeyay ee leh khadadka hawada.
1881 Bandhigga Caalamiga ah ee Korontada ee Paris: rakibidda ayaa laga saaray dhacdadaas ka dib. Bishii Oktoobar 1883, adeeggii ugu horreeyay ee joogto ah ee taraamka oo leh khadadka sare wuxuu ahaa Mödling iyo Hinterbrühl Tram ee Austria. Taraamyada waxay lahaayeen khadadka sare ee laba-geesoodka ah, oo ka kooban laba U-tuubbo, kuwaas oo pantographs-ka ay ku xirnaayeen oo ay u socdeen sidii shuttles. Laga soo bilaabo Abriil ilaa Juun 1882, Siemens wuxuu tijaabiyay nidaam la mid ah Electromote, oo ah horudhac hore ee baska.