Trolleybus Technology

摘要

Tramways bring huge commercial and environmental benefits but they require a significant capital investment. Where demand is lower or where route patterns are more complex, there is scope for the electrification of bus services and their progressive upgrading to offer a real alternative to private car use and a cleaner form of power than the internal combustion engine. Trolleybuses have been out of favour as a public transport system in the UK since Bradford's trolleybus closed down in 1972. Knowledge of the technology, the operational benefits and operational requirements has been all but lost. Yet trolleybuses are a successful mode across the world; nearly 400 systems are in operation and all the equipment necessary to construct and operate a system is already available.