Question Unless otherwise posted, the speed limit outside of cities and towns is: Answers 25 mph. 35 mph. 45 mph. 55 mph. Explanation Unless otherwise posted, the speed limit outside of cities and towns is 55 mph. If a different speed limit is posted, you should follow that speed limit. Pass your DMV Written Test with flying colors Take me to the cheat sheet North Carolina This questions appears in the following tests: North Carolina Practice Test 11 North Carolina Practice Test 14