Unless posted otherwise, the maximum speed limit on the interstate is: Before you start the test, please answer the question below regarding your insurance status. Without insurance you will not be able to drive in Your state Do you currently have motorcycle insurance? Yes I have insurance. Great, you're all set! Click here if you still want to compare rates. No, I need insurance and I want to compare options. Question Unless posted otherwise, the maximum speed limit on the interstate is: Answers 55 mph. 65 mph. 70 mph. 80 mph. Explanation The maximum speed limit on interstate highways in Wyoming is either 75 or 80 mph. If a different speed limit is posted, follow the posted limit. This questions appears in the following tests: Wyoming Motorcycle Practice Test 5 Wyoming Motorcycle Practice Test 18