Cal. Sts. & High. Code § 5682

The superintendent of streets shall, before entering upon the duties of his office, give bonds to the city, with such sureties and for such sums as may be required by the legislative body. If he fails to see that the laws, ordinances, orders, and regulations relating to the public streets are carried into execution, after notice from any citizen of a violation thereof, he and his sureties shall be liable upon his official bond to any person injured in his person or property in consequence of said official neglect.