Republicans want to cut mass public transit allocations from the Highway Trust Fund as they only serve a small local population rather than the larger infrastructure. They want to put the funding responsibility back in the hands of cities and relevant programs. They oppose an increase in raising the federal gas tax. source

Feel that government funded mass transport helps improve urban economies by giving low- and middle-class wage earners an alternative to get to work, school, and other essential locations. They also support an increase in the federal gas tax. source