Every Muni bus will be fitted with a front-facing camera  to enforce transit-only lanes  by spring of next year, according to the SF Municipal Transportation Agency [PDF ]. Three hundred of the 800 buses in the system will receive them by this fall, and all of the new buses being purchased by the SFMTA  will get them as well, the agency says.
Currently, only 4 percent of Muni’s bus fleet has cameras, which give enforcement officers the ability to ticket scofflaw drivers parked in transit lanes by mailing them a ticket. Current law prohibits the cameras from being used to cite moving violations in a transit lane (only police can do that) or drivers parked in bus stop zones.
This enforcement mechanism will be key as the SFMTA looks to improve and expand its transit-only lane network in the coming years as part of the Transit Effectiveness Project .