Opponents say closing Great Highway to cars will increase traffic as supporters argue it will mitigate coastal erosion

Californians have voted to close part of a nearly century-old highway in San Francisco to cars, transforming a two-mile section into a park for pedestrians and cyclists.

On election day, city residents voted to approve Proposition K, extending the ban on vehicles on a portion of the Upper Great Highway along the coastline. The measure has sparked intense debate over whether cars should have regular access to the area.