A new motorcycle crash study - Suzuki Volusia Forums : Intruder Volusia and Boulevard Forum
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post #1 of 13 (permalink) Old 12-31-2016, 01:48 PM Thread Starter
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A new motorcycle crash study

Here's an article of interest about a new motorcycle crash study ...

What Virginia Tech learned about how and why we crash our motorcycles - RevZilla

... and here is the 20-page study itself.

https://www.msf-usa.org/downloads/ms...tudy_Paper.pdf

I found it interesting reading. Not having taken statistics in school, I won't comment on whether the data were crunched appropriately.

But the part where it seems we riders may tend to not leave enough following distance between ourselves and other vehicles doesn't surprise me. I have to fight against it all the time in city traffic; it fits with my personal observations.

So does the part indicating that intersections are risky.

And so does the part that concludes that gravel sucks.

.
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post #2 of 13 (permalink) Old 12-31-2016, 02:12 PM
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"if you aren't looking far enough ahead, it is already too late to do anything about that road gator 20 feet in front of your bike....."




"If you’re looking at what’s right in front of you on the track (or street), you’re looking at the past, not the future. It’s already too late for you to do anything about what’s 20 feet ahead of your front tire."
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post #3 of 13 (permalink) Old 01-01-2017, 11:22 PM
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Read through the article and found it interesting. I have thought for a long time that the Hurt Report is largely irrelevant today because of the changes in motorcycling and driving but is often quoted because it is the last report of decent quality. With the sample size, this report may not be as definitive either but at least is more recent.

I didn't read the report...yet. I did read some comments at the end of the article. They got off topic with a super rant on ABS brakes...ugh... worse than the ever feared oil thread.

Most interesting to me is the number of motorcyclists running into the back of other vehicles!


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post #4 of 13 (permalink) Old 01-02-2017, 12:49 AM
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One person posted some braking information: https://www.******.com/r/motorcycles...ing_distances/

Notice how much shorter the stopping distance is for cars, using ABS, compared to some motorcycles. Wow!


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post #5 of 13 (permalink) Old 01-02-2017, 01:01 AM
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Also, calculations show that "the 2 second rule" is invalid at higher speeds because your braking distances increase faster than your following distances.

I can't remember where the break point is for this but it was discussed in a thread on here in the last year or two.... - your likely safer with a 3 second gap between you and the car in front anyway.

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post #6 of 13 (permalink) Old 01-02-2017, 02:39 AM
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It is very interesting, however, not overall as useful as the Hurt Report.

It is a good study of crash causation and a good learning tool, but not at all interesting from a preventing injury perspective. All crashes were sampled... since fatal crashes and serious injuries do not account for most crashes, the causation of crashes that cause serious injury and fatality are not considered.

I think this same study should be done with all motorcycle,fatalities for a,5 year period and determine:

Licensure
Safety gear
Alcohol use
Type of bike
Age
Type of crash
All reported factors


Combine with this causation study, we would then know a great deal.


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post #7 of 13 (permalink) Old 01-02-2017, 09:21 AM
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Quote:
Originally Posted by guitarjim View Post
One person posted some braking information: https://www.******.com/r/motorcycles...ing_distances/

Notice how much shorter the stopping distance is for cars, using ABS, compared to some motorcycles. Wow!
Your URL was jacked, here's a link that'll get you there:

https://goo.gl/SeIs2l

Everyone seems to forget physics when it comes to this stuff. Braking is all about friction. Cars have four contact patches rather than two and the contract patches are higher. They also have more weight pressing down into those contact patches. This all combines to give them a much higher friction coefficient than motorcycles which translates to much shorter stopping distances. No matter what manufacturers do on bikes, they'll never stop as quickly as a car.

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post #8 of 13 (permalink) Old 01-02-2017, 09:26 AM Thread Starter
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Quote:
Originally Posted by Gene View Post
Also, calculations show that "the 2 second rule" is invalid at higher speeds because your braking distances increase faster than your following distances.

I can't remember where the break point is for this but it was discussed in a thread on here in the last year or two.... - your likely safer with a 3 second gap between you and the car in front anyway.
Yes, I remember that, too.

Back when mastodons roamed the earth, I took a driver ed class in high school. My teacher taught us that we should add 1 second to the gap for every 10 miles an hour of speed. Perfectly sensible.

However, I find that if I actually leave a gap that large between myself and the car ahead of me on a multi-lane road, somebody will pull into my lovely safe following space. Every. Darned. Time.

.

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post #9 of 13 (permalink) Old 01-02-2017, 10:41 AM
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Quote:
Originally Posted by Woodswoman View Post
Yes, I remember that, too.

Back when mastodons roamed the earth, I took a driver ed class in high school. My teacher taught us that we should add 1 second to the gap for every 10 miles an hour of speed. Perfectly sensible.

However, I find that if I actually leave a gap that large between myself and the car ahead of me on a multi-lane road, somebody will pull into my lovely safe following space. Every. Darned. Time.

.
I was taught the same thing, but you quickly realize it doesn't make sense in the real world. At 80 mph on the interstate that would set your following distance at 938 feet. If we tried to keep that kind of speration between cars in Atlanta we'd never get enough cars on the interstate to make a difference.

I think the rule is probably more like you should be able to see ahead of you 1 second for every mph. That would mean that on the interstate I need to be looking about 1,000 feet down the road.

Following distance is important, but while I'm braking the guy in front of me will be too. I don't have to stop in the distance between our cars, and if I'm watching 1,000 feet ahead I'll most likely start my braking before he does, since most people don't watch any farther than the car in front of them.

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post #10 of 13 (permalink) Old 01-02-2017, 12:19 PM
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The 2 second rule is NOT ENOUGH!!

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Last edited by Gene; 01-02-2017 at 12:24 PM.
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