Question Unless otherwise posted, the speed limit outside of a business or residential area is: Answers 15 mph. 25 mph. 35 mph. 45 mph. Explanation When driving outside of a business or residential area, the speed limit is 45 miles per hour. If a different speed limit is posted, follow the posted limit. Pass your DMV Written Test with flying colors Take me to the cheat sheet Maine This questions appears in the following tests: Maine Practice Test 58 Maine Practice Test 57