Do you currently have car insurance? Insurance is mandatory to drive in California Yes I have insurance. But please show me your best quotes. No, please help me find the best insurance. Question Unless otherwise posted, the speed limit in residential areas is: Answers 20 mph. 25 mph. 30 mph. 40 mph. Explanation The maximum speed limit in residential and business areas is 30 mph. If a different speed limit is posted, follow the posted limit. Take a FREE Practice Test Now This questions appears in the following tests: Wyoming Practice Test