The maximum speed limit on an open highway, unless otherwise posted, is: Do you currently have motorcycle insurance? Insurance is mandatory to drive in Ohio Yes I have insurance. But please show me your best quotes. No, please help me find the best insurance. Question The maximum speed limit on an open highway, unless otherwise posted, is: Answers 55 mph. 60 mph. 65 mph. 70 mph. Explanation Unless otherwise posted, the maximum speed limit on an open highway in West Virginia is 55 mph. If another speed limit is posted, follow the posted limit.