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Regarded as the largest city in western Europe without a mass transit system, Leeds has tried and failed over decades to devise and implement an efficient way to keep its residents mobile.

Plans for trams and underground trains in Bristol - one of the largest cities in Europe not to have a mass transit system - fell apart last year amid political bickering.

Downing Street also said local leaders would be handed more than £1bn to boost transport, to help speed up schemes such as West Yorkshire's mass transit system.

A new California law eliminates minimum parking requirements for housing near mass transit.

While cities like New York and Boston have embraced mass transit, in LA it never quite caught on - only about 7% of Angelenos take transit to work, according to Neighborhood Data for Social Change.