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· Site Admin & Squeegee Boy
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OK does anybody here speak bureaucratese ?

Could they maybe present the data in a more humanoid way ?

88% of accidents are human error ? DUH !
 

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I worked for the US gov't for many years ;) I skimmed through the report, its quite interesting. There arn't that many motorcycle accident studies out there and some are statistically whacky. This one looks pretty comprehensive. Here's some stuff I took away:

  • Most often accidents involved a passenger car
  • Second most often the roadway itself
  • Most accidents occurred in an urban environment
  • Impact speeds were most often below 50 km/h
  • Unlicensed and impaired riders had a greater risk
  • In 37% of accidents the primary contributing factor was an error on the part of the rider
  • Riders 41-55 were under-represented, suggesting they may have a significantly lower risk
  • 18-25 year old riders were over represented
  • In 50% of accidents the primary cause was an error on the part of the driver of the other vehicle
  • 18% resulted in a traffic citation issued to the driver of the other vehicle
  • 90% of all risks to the rider were in front of the rider prior to the accident
  • 70% of the other vehicle driver errors were due to failure to see the rider
  • Tampering to increase performance was observed in 17.8% of all moped cases (this one makes me laugh)
  • Modified street motorcycles were over-represented in the data
  • Mechnical problems with the bike contributed to less than 1% of accidents and those that did were mainly due to tires
  • 71.2% of all riders attempted some form of collision avoidance, 32% experienced some type of loss of control while attempting to avoid the collison.
  • 69% of the other vehicle drivers attempted no collision avoidance manoeuvre (!!)
  • 90.4% of riders were wearing helmets but 9.1% of these helmets came off during the accident due to poor fastening or damage to the helmet (ouch)
  • Helmets were very effective in reducing significant head injury
  • A roadway maintenance defect caused the accident or was a factor in 3.6% of all accidents
  • Weather caused or contributed to 7.4% of all accidents
  • 54.3% of the accidents took place at an intersection.
  • 11.2% resulted in fatalities for the rider or passenger within 30 days (this number inflated due to the German team focusing on more serious injury accidents)
  • Engine displacement does not represent a risk factor in accident involvement.
  • 84.7% of the time the roads were dry at the time of the accident.
  • Road surfaces were considered optimal in 61.4% of cases
  • Where there was a traffic control, it was violated in 29.8% of cases by the rider and in 45.6% of cases by the other vehicle driver.
  • Riders under 21 were the primary accident contributing factor 42% of the time, while riders over 21 were the primary contributing factor less then 37% of the time
  • 77% of other vehicle drivers were over the age of 26, almost all were licenced and 21% also had a motorcycle licence
  • Other vehicle operators who also held a motorcycle licence were less likely to commit perception failures than other vehicle operators who did not have a motorcycle licence (26.4% versus 50.9%)
  • In 82.7% of all cases, there was no skill deficiency noted for the rider. In 10.0% of the cases, there was a skill deficiency noted that was also a contributing factor in the accident
  • The use of dark rider clothing decreased conspicuity in 13.0% of all accidents
  • In 65.3% of all cases, the clothing made no contribution to the conspicuity of the rider. There were very few cases found in which the bright clothing of the rider enhanced the rider's overall conspicuity. There were more cases in which the use of dark clothing decreased the conspicuity of the rider
  • Accidents occur more frequently in light to medium traffic conditions
  • In 24.2% of the accidents collected, the headlamp was not in use at the time of the accident
  • In 82.2% of cases involving a passenger, the passenger made no contribution to the causation of the accident
 

· Site Admin & Squeegee Boy
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Thanks for the translation, I just wasn't up to deciphering the info this morning.

Is there any info on the level of training the bike riders had ? Or the influence of drugs/alcool ?.

NHTSA stats show that DWI ( by bike riders themselves ) and lack of rider training is responsable for most bike accidents in the US along with excesive speed.
 

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Discussion Starter · #7 ·
"The number of cases involving alcohol use among the [motorcycle] riders was less than 5%, which is low in comparison to other studies, but such riders were more likely to be involved in an accident."

-and-

"In 50% of cases, the primary accident contributing factor was a human error on the part of the other vehicle driver. Other drivers holding [motorcycle] licences were less likely to commit a perception failure than those without a [motorcycle] licence, i.e., they did not see the [bike] or its rider."
 

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Discussion Starter · #8 ·
Keep in mind that the DWI laws in Europe are fairly strict ... here in Switzerland, the law is changing on January 1 ... up until now, "legally drunk" was 0.8 promille. As of January 1st, it's dropping to 0.5 promille, which seems to be the European norm.

There are exceptions ... several countries have 0-tolerance - anything other than 0.0 promille is DWI.
 

· Site Admin & Squeegee Boy
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Of course to put things into perspective, this is a European study where motorcyclists have much stricter regulations to abide by in order to get their licences. They must follow a much more involved training program then have to work their way up the displacement ladder over a number of years.

What is the accident ratio per registered rider in Europe versus North America ?
 

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I'll just edit my post above with any new interesting facts I come across from the report. Does anyone know what these 2 wheeled vehicle types mean?

L1 vehicle - mofa
L1 vehicle - other
L3 vehicle

*EDIT* I'm pretty sure L1 is moped/scooters under 100ccs and L3 are motorcycles, probably 100ccs or greater. Though I might be wrong :)

Also its interesting that the type of accident I always hear everyone talking about, oncoming car making a left in front of a bike, on accounted for 8.9% of accidents.

I'm done reading the whole report. I've updated the post above with the stuff I found interesting. I glossed over the injury data and couldn't extrapolate anything really juicy about clothing (leathers, armor, etc) as it related to injuries other than they are significantly reduced when the right gear is used.
 

· Site Admin & Squeegee Boy
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L1 Two wheeled 50cc or less engine and/or top speed lesser than 50 km/h
L3 Two wheeled 50cc or more engine and/or top speed greater than 50 km/h

So this really skews the info, they are including scooters with max speeds of less than 50 km/h ( 30mph ). These vehicles are basically considered toys here. They would be ridden by young people with little or no training and little or no experience. These vehicles account for over 42% of the accidents.

Sorry there isn't anything I would like more than a good study to get my safety views across but this study isn't going to do it for me. 25% of ptw in accidents are black ! So what ! whats the percentage of black motorcycles registered ? If it's the same then the color has no impact.

The important info here is the same that came out with the hurt report and with the current NHTSA stats. Get training, don't drink and ride, ride at speeds appropriate to your skill level, bike limits and road conditions. And always assume you're invisible to others.
 

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Uncle Bob said:
...Sorry there isn't anything I would like more than a good study to get my safety views across but this study isn't going to do it for me. 25% of ptw in accidents are black ! So what ! whats the percentage of black motorcycles registered ? If it's the same then the color has no impact...
They did say that white bikes were over-represented ;)
 

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The word 'conspicuity' is represented in 5.5% of the bullets ====> in my opinion, average.

However, 'conspicuity' is only used .65% of the time within the bulleted body =======> highly under represented, if you ask me.
 
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