Jonathan English’s article on mass transit in America starts off sad, and just gets worse from there:
One hundred years ago, the United States had a public transportation system that was the envy of the world. Today, outside a few major urban centers, it is barely on life support. […]
At the turn of the 20th century, when transit companies’ only competition were the legs of a person or a horse, they worked reasonably well, even if they faced challenges. Once cars arrived, nearly every U.S. transit agency slashed service to cut costs, instead of improving service to stay competitive. This drove even more riders away, producing a vicious cycle that led to the point where today, few Americans with a viable alternative ride buses or trains.
It’s important to note that this is not an accident. It is a direct result of urban design:
The story of American transit didn’t have to turn out this way. Look again at Toronto. It’s much like American cities, with sprawling suburbs and a newer postwar subway system. But instead of relying on park-and-ride, Toronto chose to also provide frequent bus service to all of its new suburbs. (It also is nearly alone in North America in maintaining a well-used legacy streetcar network.) Even Toronto’s suburbanites are heavy transit users, thanks to the good service they enjoy.
Likewise, in Europe, even as urban areas expanded dramatically with the construction of suburbs and new towns, planners designed these communities in ways that made transit use still feasible, building many of them around train stations. When cities like Paris, London, and Berlin eliminated their streetcar networks, they replaced them with comparable bus service.
Some further reading that digs into pedestrians and cars a little more: