Yosemite’s traffic problems date to the late 1950s, when thousands of motorists began jamming the valley to view the “fire fall” — a spectacle in which a cascade of hot coals was shoved ...

The explosive growth of Uber and Lyft has created a new traffic problem for major U.S. cities and ride-sharing options such as UberPool and Lyft Line are exacerbating the issue by appealing ...