From San Francisco to Washington, D.C., e-scooters and dockless bikes have become the latest transportation trend to grip urban spaces — and local governments are struggling to keep up.
The concept is simple: Riders download an app, find and unlock a scooter or bike, and leave it when they're done. Many cost as little as $1, and fans of the services tout them as faster, easier, and greener ways to get where they're going.