The largest car sharing company in the world is withdrawing from five North American cities after being squeezed at both ends of a volatile economy that has given passengers a multitude options to motor around their cities.

Americans spent four times as much money on Uber and Lyft trips last year as they did in 2013. This is a crisis.

Take that, Koch brothers: Voters in Phoenix have soundly rejected a proposal that would have halted the expansion of the city's light rail system.

Cyclists love riding the scenic roads in the Hudson River valley, but a Draconian municipal law could have cops ticketing riders and even throwing them in jail if they ride side by side.

London's painstaking network of new bike lanes, its refurbished signals at intersections, and its world-famous traffic congestion policies are paying off with record ridership. Can New York get with the programme (yes, that's the British spelling!)

The two tech giants' battle over San Francisco's bike share system will have implications across the country.

In New York City, we want more speed cameras. In Texas, the governor just made them illegal.