Of all the motor vehicles on the road, motorcycles are the least safe. They are less stable and less visible than four-wheeled vehicles. They also lack the protection systems of cars and trucks such as bumpers, protective “cages,” seatbelts, and airbags. The only safety system motorcyclists have is their protective gear, riding skills, and their mindset. Unfortunately, the mindset of some motorcyclists greatly increases their injury and fatality risk. Here are two psychological factors that cause motorcycle accidents: Riding With the Wrong Attitude The wrong attitude distorts clear thinking and risk assessments..