Plans for a "transformational" multi-billion pound mass transit system for West Yorkshire have been announced.
West Yorkshire Combined Authority (WYCA) said the scheme could see nine routes built in stages across the county over 20 years.
The project will rely on securing central funds, with a business case due to be submitted to government in 2022.
Previously, Leeds was set to get a trolley bus network and a supertram but both plans were subsequently scrapped.
In a report, the WYCA said the options being considered are light-rail, tram-train and prioritised routes for electric buses.
An exact price tag for the scheme has not been revealed, but the WYCA said it would be bidding for a share of a £4.2bn devolved transport fund announced by Chancellor Rishi Sunak last March.
Judith Blake, Leeds City Council leader, said: "The people of West Yorkshire deserve a transport system that fills them with pride, with optimism and above all with the confidence our region has a clear direction of travel towards a future that brings prosperity for all."
Kim Groves, chair of the WYCA transport committee, said the scheme would "represent a bold investment - a transformational transport system that will benefit many generations to come".