Crawling cars
The switchback's design was born out of necessity in order to reduce the hill's natural 27% grade, which was too steep for most vehicles to climb. The speed limit in this section is 5 mph (8 km/h).
Lombard Street, San Francisco, California, USA
building, car, people, street (usa, usa california, san francisco, lombard street, artifact, vehicle, group, person, road, north america, california, living thing, way, nature)