Plans for Leeds to become the first city in the UK to reintroduce electric trolleybuses have gone on display.
Public transport provider Metro wants to build an electric bus network in Leeds city centre to replace the city's failed supertram scheme.
Bradford, the last UK city to operate trolleybuses, shut its system in 1972.
An exhibition of the plans, with maps of the proposed routes, will be on display at a series of events across the city over the next month.
Visitors will be able to ask questions of the team behind the plans and give their views in a questionnaire.
Exhibition dates and locations
Metro said the scheme, which is similar to the one in Lyon, France, would help tackle congestion and reduce pollution in the city centre.
The trolleybuses would initially travel along three routes into and around the city centre, linking major businesses, the two universities, the main hospitals and shopping areas.
It is hoped the scheme will be completed by 2015.
Almost £40m was spent on the Leeds supertram plans before they were rejected for being too costly by the Department of Transport in November 2005.