Question Unless otherwise posted, the speed limit is ____ on streets and highways. Answers 70 mph 55 mph 45 mph 30 mph Explanation Unless otherwise posted, the speed limit on streets and highways is 55 mph. If a posted sign indicates otherwise, follow the speed limit on the posted sign. Pass your DMV Written Test with flying colors Take me to the cheat sheet Florida This questions appears in the following tests: Florida Practice Test 33 Florida Practice Test 5