20. The typical motorcycle accident allows the motorcyclist just less than 2 seconds to avoid the collision.

21. Motorcycle modifications such as those associated with the semi-chopper or cafe racer are definitely overrepresented in accidents.

22. The likelihood of injury is extremely high in motorcycle accidents - 98% of multiple vehicle collisions and 96% of single vehicle accidents result in some kind of injury to the motorcycle rider; 45% result in more than a minor injury.

23. Half of the injuries to motorcycle riders are to the ankle-foot, lower leg, knee, and thigh-upper leg.

24. Crash bars are not an effective injury countermeasure; the reduction of injury to the ankle-foot is balanced by increase of injury to the thigh-upper leg, knee, and lower leg.

25. The use of heavy boots, jacket, gloves, etc., is effective in preventing or reducing abrasions and lacerations, which are frequent but rarely severe injuries.

26. Speed, alcohol involvement and motorcycle size increade the injury severity.

27. Seventy-three percent of accident-involved motorcycle riders use no eye protection, and it is likely that the wind on their unprotected eyes contributes to impairment of vision which delays hazard detection.

28. Approximately 50% of the motorcycle riders in traffic use safety helmets but only 40% wear helmets at the time of their accident.

29. Voluntary safety helmet use by accident-involved motorcycle riders was lowest for untrained, uneducated, young motorcycle riders on hot days and short trips.

30. The most deadly injuries to motorcycle accident victims are injuries to the chest and head.

31. The use of the safety helmet is the single critical factor in the prevention or reduction of head injury.

32. Safety helmet use does not decrease the riders ability to hear or see, and causes no fatigue or loss of attention; no element of accident causation is related to helmet use.

33. Helmeted riders and passengers showed significantly lower head and neck injury for all types of injury, at all levels of injury severity.

34. The increased coverage of the full facial coverage helmet increases protection, and significantly reduces face injuries.

35. There is no increase in neck injury by wearing a safety helmet; helmeted riders have fewer neck injuries than unhelmeted riders.