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: Alaska Motorcycle Practice Test 21 Arizona Motorcycle Practice Test 16 Arizona Motorcycle Practice Test 20 Connecticut Motorcycle Practice Test 1 Connecticut Motorcycle Practice Test 11 District Of Columbia Motorcycle Practice Test 1 District Of Columbia Motorcycle Practice Test 4 Hawaii Motorcycle Practice Test 19 Iowa Motorcycle Practice Test 12 Kentucky Motorcycle Practice Test 4 Louisiana Motorcycle Practice Test 23 Maine Motorcycle Practice Test 15 Maine Motorcycle Practice Test 26 Maryland Motorcycle Practice Test 1 Massachusetts Motorcycle Practice Test 23 New Hampshire Motorcycle Practice Test 25 New Hampshire Motorcycle Practice Test 4 New Jersey Motorcycle Practice Test 49 North Carolina Motorcycle Practice Test 16 North Carolina Motorcycle Practice Test 11 Oklahoma Motorcycle Practice Test 10 Oklahoma Motorcycle Practice Test 1 Oregon Motorcycle Practice Test 6 Utah Motorcycle Practice Test 25 Vermont Motorcycle Practice Test 17 Wisconsin Motorcycle Practice Test 20