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Buell Forum » Quick Board » Archive through November 14, 2016 » Effectiveness of motorcycle antilock braking systems (ABS) in reducing crashes, the first cross-national study « Previous Next »

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Froggy
Posted on Friday, September 30, 2016 - 04:44 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

https://www.ncbi.nlm.nih.gov/pubmed/24884403

This is good to see, hopefully it will lead to more widespread adoption of ABS.


quote:

The effectiveness of motorcycle ABS in reducing injury crashes ranged from 24% (95% confidence interval [CI], 12-36) in Italy to 29% (95% CI, 20-38) in Spain, and 34% (95% CI, 16-52) in Sweden. The reductions in severe and fatal crashes were even greater, at 34% (95% CI, 24-44) in Spain and 42% (95% CI, 23-61) in Sweden. The overall reductions of crashes involving ABS-equipped scooters (at least 250 cc) were 27% (95% CI, 12-42) in Italy and 22% (95% CI, 2-42) in Spain. ABS on scooters with at least a 250 cc engine reduced severe and fatal crashes by 31% (95% CI, 12-50), based on Spanish data alone.


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86129squids
Posted on Friday, September 30, 2016 - 11:27 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Yeah, I'm allergic to pavement.
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Badlionsfan
Posted on Saturday, October 01, 2016 - 12:07 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Gave the abs on the Roadmaster its first go last weekend and it worked well. I wasn't sure about motorcycle abs, but I'm a fan now.
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Aesquire
Posted on Saturday, October 01, 2016 - 05:30 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

A historical note.

Anti lock braking was an aircraft invention.

It was banned for road use..... I think before I was born, because the version at the time, tested in trucks, lost you your brakes completely when it failed.

That was as different a setup from today's as Hilborn fuel injection is to common rail electronic.
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Reepicheep
Posted on Saturday, October 01, 2016 - 10:42 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Aside from preferences and issues with weight, complexity, cost, and packaging, it is hard to make a case against ABS on the front wheel of a motorcycle.
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Sifo
Posted on Saturday, October 01, 2016 - 11:58 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I was tooling down a nice road once on my Sprint ST when I came upon a curve sign quickly followed by a stop ahead sign. Somehow I failed to process it all correctly and came barreling through that curve, suddenly faced with a stop sign at the exit of the curve, at a T intersection. Leaned over in a blind right-hander is not where I want to find a T intersection! I hit the hooks as much as I dared, and sure enough the rear started a slide. I'm really not sure if the ABS saved me or not, but either way it damn near pitched me off the bike in a high side. I know I let go of the rear brake as soon as I detected a skid, but it's likely that the ABS beat me to the punch. I really don't know for sure. No doubt things have developed further since that 2006 model, and can deal better with a leaned over bike.

I never really had the guts to intentionally try to lock the front wheel to see how it would respond. The rear seemed to respond as you would expect though. I'm a fan of ABS on cars and bikes.
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Ourdee
Posted on Sunday, October 02, 2016 - 09:00 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I've been saved by the ABS in a Neon on a curvy road when a vehicle came out of a driveway. Same car on ice and I had to turn it off to get shorter stopping distances. I'm still not sold on the bike deal.
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Tootal
Posted on Monday, October 03, 2016 - 10:48 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Sifo, you most likely saved yourself, discounting your guardian angel! From my understanding of motorcycle ABS, it doesn't work while you're leaning. Unless they have changed the technology, since BMW started using ABS, it was explained that way to me back then.

In a straight line ABS is amazing and I have tested it extensively on a BMW GS given to me for a weekend to take to a German Car Show. I had the most awesome BMW dealer back then! Even the pictures of me two feet in the air coming off a dirt hill didn't bother them!
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Ratbuell
Posted on Monday, October 03, 2016 - 01:38 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

By design, ABS fights *rotational* lockup. I.E. keeps the wheels turning. It does nothing for a lateral slide - you can slide sideways and still have wheels that are rotating. See "donuts". Saving grace for ABS in automobiles is it helps allow you to steer through. It can do the same on a bike by keeping you from locking and sliding the front end...but you're gonna be dirt-tracking it if you've already initiated a lateral slide.
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Tootal
Posted on Monday, October 03, 2016 - 02:01 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

but you're gonna be dirt-tracking it if you've already initiated a lateral slide.

Weeeee! You ever notice when you accidentally start dirt-tracking you're scared to death your going down but as soon as you realize you handled it and you're once again safe you think WOW! That was so cool!
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Ratbuell
Posted on Monday, October 03, 2016 - 02:24 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

...and there's never anyone around with a camera....
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Tootal
Posted on Monday, October 03, 2016 - 02:28 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

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Dwardo
Posted on Monday, October 03, 2016 - 02:36 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

A few years ago I went around a turn (slow) on the Norton, with my buddy in tow on his Fat Boy. It is a well-behaved bike with good tires. I don't know what I hit on the road but the rear tire stepped out big time. I got it upright and it went the other way then went into a wild tank slapper. I got it under control and stopped on the side of the road to check my underwear first and then the rear tire for oil (I was convinced, but there was none - I thought the oil tank let go and soaked the tire, but no). My buddy said "nice save". I had to agree. If he hadn't been behind me it would just have been a bad experience but now I can say "remember that time ...".
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Ourdee
Posted on Monday, October 03, 2016 - 06:17 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

May have been antifreeze.
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1313
Posted on Monday, October 03, 2016 - 08:03 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Whazzat? Motorcycles are safe?!?!

No dog in this fight, and no personal experience, just something I've seen in (Bosch) company publications.

Is ABS a gateway to full electronics?
1313
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Crusty
Posted on Monday, October 03, 2016 - 10:45 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

My Moto Guzzi Norge had ABS. I didn't like it.
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Ratbuell
Posted on Monday, October 03, 2016 - 11:39 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

ABS uses the sensors (wheel speed) that can feed any sort of electronic "aid". Traction control for one. Which, by definition, can affect timing, power output, electronic throttle positioning, etc.
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