REVOLUTIONS—of the bicycle-wheel sort—have been taking place in cities across the U.S., with bike-sharing programs such as Nice Ride in Minneapolis, CitiBike in New York, and Metro Bikes in car-consumed Los Angeles springing up at a rapid clip. Cities have begun etching miles of designated bike lanes into their streets: New York City has paved the way, carving nearly 100 miles of such routes into its streets in the last decade (with 20 more miles coming in 2018), and other major cities are pedaling to keep up.
Another sign...