From: Stephan Wunsch, Stephan.Wunsch@NOSPAMstgl.sel.alcatel.de
Subject: Unfallursachen und -auswirkungen (lang und in Englisch)
Date: Mon, 01 Sep 1997 10:09:54 GMT
Organization: Alcatel SEL AG Stuttgart

Hi all,

anbei eine IMO höchst interessante Studie aus Amerika, durchgeführt von
der University of Southern California (USC). Übersetzt hab´ ich es
nicht, da Radbert sich sonst wieder über meine mangelnden Sprach-
kenntnisse echauffiert. 

Einige der Punkte stellen doch mal Märchen wie 'wg. Helm nix gesehen'
oder 'Große Moppeds sind häufiger in Unfälle verwickelt' etc. in ein
etwas anderes Licht. Für .de irrelevante Punkte hab´ ich gesnipped.

>   1. Approximately three-fourths of these motorcycle accidents involved 
>collision with another vehicle, which was most usually a passenger automobile.

>   2. Approximately one-fourth of these motorcycle accidents were single 
>vehicle accidents involving the motorcycle colliding with the roadway or 
>some fixed object in the environment.

>   3. Vehicle failure accounted for less than 3% of these motorcycle 
>accidents, and most of those were single vehicle accidents where control 
>was lost due to a puncture flat.

>   4. In the single vehicle accidents, motorcycle rider error was present 
>as the accident precipitating factor in about two-thirds of the cases, 
>with the typical error being a slideout and fall due to overbraking or 
>running wide on a curve due to excess speed or under-cornering.

>   5. Roadway defects (pavement ridges, potholes, etc.) were the accident 
>cause in 2% of the accidents; animal involvement was 1% of the accidents.

>   6. In the multiple vehicle accidents, the driver of the other vehicle 
>violated the motorcycle right-of-way and caused the accident in 
>two-thirds of those accidents.

>   7. The failure of motorists to detect and recognize motorcycles in 
>traffic is the predominating cause of motorcycle accidents. The driver of 
>the other vehicle involved in collision with the motorcycle did not see 
>the motorcycle before the collision, or did not see the motorcycle until 
>too late to avoid the collision.

>   8. Deliberate hostile action by a motorist against a motorcycle rider 
>is a rare accident cause. The most frequent accident configuration is the 
>motorcycle proceeding straight then the automobile makes a left turn in 
>front of the oncoming motorcycle.

>   10. Intersections are the most likely place for the motorcycle 
>accident, with the other vehicle violating the motorcycle right-of-way, 
>and often violating traffic controls.

>   11. Weather is not a factor in 98% of motorcycle accidents.

>   12. Most motorcycle accidents involve a short trip associated with 
>shopping, errands, friends, entertainment or recreation, and the accident 
>is likely to happen in a very short time close to the trip origin.

>   13. The view of the motorcycle or the other vehicle involved in the 
>accident is limited by glare or obstructed by other vehicles in almost 
>half of the multiple vehicle accidents.

>   14. Conspicuity of the motorcycle is a critical factor in the multiple 
>vehicle accidents, and accident involvement is significantly reduced by 
>the use of motorcycle headlamps (on in daylight) and the wearing of high 
>visibility yellow, orange or bright red jackets.
  
> 15. Fuel system leaks and spills were present in 62% of the motorcycle 
>accidents in the post-crash phase. This represents an undue hazard for 
>fire.
  
> 16. The median pre-crash speed was 29.8 mph, and the median crash 
>speed was 21.5 mph, and the one-in-a-thousand crash speed is 
>approximately 86 mph.

>   17. The typical motorcycle pre-crash lines-of-sight to the traffic 
>hazard portray no contribution of the limits of peripheral vision; more 
>than three-fourths of all accident hazards are within 45deg of either 
>side of straight ahead.

>   18. Conspicuity of the motorcycle is most critical for the frontal 
>surfaces of the motorcycle and rider.

>   19. Vehicle defects related to accident causation are rare and likely 
>to be due to deficient or defective maintenance.

>   20. Motorcycle riders between the ages of 16 and 24 are significantly 
>overrepresented in accidents; motorcycle riders between the ages of 30 
>and 50 are significantly underrepresented. Although the majority of the 
>accident-involved motorcycle riders are male (96%), the female 
>motorcycles riders are significantly overrepresented in the accident 
>data.
  
> 22. Craftsmen, laborers, and students comprise most of the 
>accident-involved motorcycle riders. Professionals, sales workers, and 
>craftsmen are underrepresented and laborers, students and unemployed are 
>overrepresented in the accidents.

>   23. Motorcycle riders with previous recent traffic citations and 
>accidents are overrepresented in the accident data.

>   24. The motorcycle riders involved in accidents are essentially 
>without training; 92% were self-taught or learned from family or friends. 
>Motorcycle rider training experience reduces accident involvement and is 
>related to reduced injuries in the event of accidents.

>   25. More than half of the accident-involved motorcycle riders had less 
>than 5 months experience on the accident motorcycle, although the total 
>street riding experience was almost 3 years. Motorcycle riders with dirt 
>bike experience are significantly underrepresented in the accident data.

>   26. Lack of attention to the driving task is a common factor for the 
>motorcyclist in an accident.

>   27. Almost half of the fatal accidents show alcohol involvement.

>   28. Motorcycle riders in these accidents showed significant collision 
>avoidance problems. Most riders would overbrake and skid the rear wheel, 
>and underbrake the front wheel greatly reducing collision avoidance 
>deceleration. The ability to countersteer and swerve was essentially 
>absent.

>   29. The typical motorcycle accident allows the motorcyclist just less 
>than 2 seconds to complete all collision avoidance action.

>   30. Passenger-carrying motorcycles are not overrepresented in the 
>accident area.

>   31. The driver of the other vehicles involved in collision with the 
>motorcycle are not distinguished from other accident populations except 
>that the ages of 20 to 29, and beyond 65 are overrepresented.
>Also, these drivers are generally unfamiliar with motorcycles.

>   32. The large displacement motorcycles are underrepresented in 
>accidents but they are associated with higher injury severity when 
>involved in accidents.

>   33. Any effect of motorcycle color on accident involvement is not 
>determinable from these data, but is expected to be insignificant because 
>the frontal surfaces are most often presented to the other vehicle 
>involved in the collision.

>   34 Motorcycles equipped with fairings and windshields are 
>underrepresented in accidents, most likely because of the contribution to 
>conspicuity and the association with more experienced and trained riders.

>   35. Motorcycle riders in these accidents were significantly without 
>motorcycle license, without any license, or with license revoked.

>   36. Motorcycle modifications such as those associated with the 
>semi-chopper or cafe racer are definitely overrepresented in accidents.

>   37.The likelihood of injury is extremely high in these motorcycle 
>accidents-98% of the multiple vehicle collisions and 96% of the single 
>vehicle accidents resulted in some kind of injury to the motorcycle 
>rider; 45% resulted in more than a minor injury.

>   38. Half of the injuries to the somatic regions were to the 
>ankle-foot, lower leg, knee, and thigh-upper leg.

>   39. 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.

>   40. The use of heavy boots, jacket, gloves, etc., is effective in 
>preventing or reducing abrasions and lacerations, which are frequent but 
>rarely severe injuries.

>   41. Groin injuries were sustained by the motorcyclist in at least 13% 
>of the accidents, which typified by multiple vehicle collision in frontal 
>impact at higher than average speed.

>   42. Injury severity increases with speed, alcohol involvement and 
>motorcycle size.

>   43. Seventy-three percent of the accident-involved motorcycle riders 
>used no eye protection, and it is likely that the wind on the unprotected 
>eyes contributed in impairment of vision which delayed hazard detection.

>   44. Approximately 50% of the motorcycle riders in traffic were using 
>safety helmets but only 40% of the accident-involved motorcycle riders 
>were wearing helmets at the time of the accident.

>   46. The most deadly injuries to the accident victims were injuries to 
>the chest and head.

>   47. The use of the safety helmet is the single critical factor in the 
>prevention of reduction of head injury; the safety helmet which complies 
>with FMVSS 218 is a significantly effective injury countermeasure.

>   48. Safety helmet use caused no attenuation of critical traffic 
>sounds, no limitation of precrash visual field, and no fatigue or loss of 
>attention; no element of accident causation was related to helmet use.

>   49. FMVSS 218 provides a high level of protection in traffic 
>accidents, and needs modification only to increase coverage at the back 
>of the head and demonstrate impact protection of the front of full facial 
>coverage helmets, and insure all adult sizes for traffic use are covered 
>by the standard.

>   50. Helmeted riders and passengers showed significantly lower head and 
>neck injury for all types of injury, at all levels of injury severity.
 
>  51. The increased coverage of the full facial coverage helmet 
>increases protection, and significantly reduces face injuries.

>   52. There is not liability for neck injury by wearing a safety helmet; 
>helmeted riders had less neck injuries than unhelmeted riders. Only four 
>minor injuries were attributable to helmet use, and in each case the 
>helmet prevented possible critical or fatal head injury.

Stephan
--
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