Question More than half of all crashes: Answers Occur at speeds greater than 35 mph. Happen at night. Are caused by worn tires. Involve riders who have operated the involved motorcycle for less than six months. Explanation More than half of all motorcycle crashes involve riders with less than six months of experience on the motorcycle being used. Take a FREE Practice Test Now This questions appears in the following tests: North Dakota Practice Test New Jersey Practice Test Ohio Practice Test Arizona Practice Test New Mexico Practice Test Maine Practice Test Wisconsin Practice Test Oregon Practice Test Alaska Practice Test Missouri Practice Test Idaho Practice Test Minnesota Practice Test Montana Practice Test