 In November 2016, the West of England Local Enterprise Partnership began a consultation process on their Transport Vision Summary Document, outlining potential light rail/tram routes from the city centre to Bristol Airport, the eastern and north west fringes of the city, and a route along the A4 road to Bath.By 2017, this proposal had changed to a mass transit network with potential for underground sections, linking the city centre with the northern and eastern fringes of the city and the airport.Bristol Ferry Boats operates passenger ferry boat services on Bristol Harbour in the centre of Bristol.