Question Unless it is posted otherwise, the speed limit in a residential area is: Answers 25 miles per hour. 20 miles per hour. 35 miles per hour. 15 miles per hour. Explanation In a residential area, the speed limit is 25 miles per hour, unless otherwise posted. Pass your DMV Written Test with flying colors Take me to the cheat sheet Ohio This questions appears in the following tests: Ohio Practice Test 34 Ohio Practice Test 4