511 SF Bay - Attention: the Bay Bridge rule is 3+ to carpool. The Bryant Street carpool on-ramp in San Francisco and toll plaza carpool lanes in Oakland require 3 or more
![A carpool only exit sign on Highway 405 with cars driving in background. Bellevue, Washington, USA Stock Photo - Alamy A carpool only exit sign on Highway 405 with cars driving in background. Bellevue, Washington, USA Stock Photo - Alamy](https://c8.alamy.com/comp/BEM8W2/a-carpool-only-exit-sign-on-highway-405-with-cars-driving-in-background-BEM8W2.jpg)
A carpool only exit sign on Highway 405 with cars driving in background. Bellevue, Washington, USA Stock Photo - Alamy
California Commute: Orange County takes continuous-access approach on carpool lanes - Los Angeles Times
![New Bus/Carpool Lane Opens On West Grand Avenue Approach to Bay Bridge | Metropolitan Transportation Commission New Bus/Carpool Lane Opens On West Grand Avenue Approach to Bay Bridge | Metropolitan Transportation Commission](https://mtc.ca.gov/sites/default/files/images/grand_lane.jpg)