Assembly Bill 645 authorized speed cameras in six California cities: San Francisco, San Jose, Oakland, Los Angeles, Long Beach and Glendale.

Speed warnings in San Francisco are set to turn into fines on Tuesday, ranging from $50 to $500, depending on how fast drivers are going.

San Francisco doesn’t want anyone to miss the memo: Drivers caught going 11 miles per hour or more over the speed limit by one of the city’s new speed cameras will get a ticket starting next ...