More than half of all crashes: Question More than half of all crashes: Answers Occur at speeds greater than 35 mph. Are caused by worn tires. Happen in the dark. Involve riders who have little experience on their motorcycles. Explanation Most motorcycle crashes involve riders with little experience on their motorcycle. This questions appears in the following tests: North Carolina Motorcycle Practice Test 18 Alaska Motorcycle Practice Test 23 Arizona Motorcycle Practice Test 17 Arizona Motorcycle Practice Test 28 Connecticut Motorcycle Practice Test 6 District Of Columbia Motorcycle Practice Test 7 Hawaii Motorcycle Practice Test 16 Iowa Motorcycle Practice Test 25 Kentucky Motorcycle Practice Test 14 Louisiana Motorcycle Practice Test 13 Maine Motorcycle Practice Test 37 Maryland Motorcycle Practice Test 18 Massachusetts Motorcycle Practice Test 15 New Hampshire Motorcycle Practice Test 10 New Jersey Motorcycle Practice Test 20 Oklahoma Motorcycle Practice Test 1 Oregon Motorcycle Practice Test 14 Oregon Motorcycle Practice Test 15 Utah Motorcycle Practice Test 5 Vermont Motorcycle Practice Test 8 Vermont Motorcycle Practice Test 14 Wisconsin Motorcycle Practice Test 5 Wisconsin Motorcycle Practice Test 18