What is the role of the federal government on urban transportation issues?

What is the role of the federal government on urban transportation issues? How does the government handle urban transportation problems? How is it structured to deal with various aspects of planning, legislation, organization, operation and maintenance of urban transportation?

Thanks

tell your liberal teacher that there is no mass transit system in the country that could operate without government funds. they are bottomless pits of inefficiency and waste . they are a form of welfare for urban areas. why should you and i pay for free transportation for people who live in cities they can buy their own cars and gas just like the rest of the country.