Minneapolis clearly shows Jacobsean 'safety in numbers' phenomenon
#26
Cycle Year Round
So now we are back to the old claim that only those that live in a city can discuss the LAB (based in Washington DC by the way) claims. Especially claims they try to use nation wide.
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Hey.
How about if both you guys knock it off, huh? Quit arguing ideology and maybe shut the heck up and, you know, LISTEN to what the people who actually live and ride and commute year-round in the city in question have to say about this. If you have a pre-existing problem with each other, take it to PMS and keep your slapfighting out of public, there's no need to drag the rest of us into that mess.
Remember that when you grind an axe it throws sparks.
How about if both you guys knock it off, huh? Quit arguing ideology and maybe shut the heck up and, you know, LISTEN to what the people who actually live and ride and commute year-round in the city in question have to say about this. If you have a pre-existing problem with each other, take it to PMS and keep your slapfighting out of public, there's no need to drag the rest of us into that mess.
Remember that when you grind an axe it throws sparks.
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A more realistic scenario is encountering say five or six cyclists on a trip instead of three or four. The extra two cyclists make the driver significantly more aware? Yes, according to S. i. N. theory.
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Debate is fine. Academic discussion over which statistical method produces better prediction/interpretation of real-world results is fine. Ignoring intel from the men at the coal-face is just stupid. Plus, internet sissyfighting gets no one anywhere.
Who appointed me moderator? I did. Somebody has to step up and be Hank Hill.
CB, I would like that to be the last time you call me names. That's kinda uncalled-for.
Who appointed me moderator? I did. Somebody has to step up and be Hank Hill.
CB, I would like that to be the last time you call me names. That's kinda uncalled-for.
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Well, that's just not true. Lawful, visible and predictable cyclists "following best practices" are overlooked all the time by drivers, and they get hit all the time. It is not rare in absolute terms or in relative terms compared to other types of car-bike crashes.
A more realistic scenario is encountering say five or six cyclists on a trip instead of three or four. The extra two cyclists make the driver significantly more aware? Yes, according to S. i. N. theory.
A more realistic scenario is encountering say five or six cyclists on a trip instead of three or four. The extra two cyclists make the driver significantly more aware? Yes, according to S. i. N. theory.
Even though there are a fair number of cyclists around here, I make plenty of trips by car when I don't see even one.
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Never knew that predictable cyclists following best practices (by any definition) was ever a recordable entry in any accident report or credible statistical study.
#33
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But now that ILTB is back, you will get to see real name calling and insults.
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#34
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Again, you're not grasping the basic point. You won't get a valid result from counting commuter cyclists, then comparing changes in that number to changes in overall reported accidents, to include not only 7-year-old kids, but the late-night drunken riders whose mishaps make up such a disproportionately large percentage of the accident reports.
I haven't seen anything that would steer me away from the conclusion that Safety in Numbers phenomenon is really a measure of the average age and experience level of a cycling population, not about the overall number.... the greater the ratio of adult commuter cyclists to kid cyclists and drunks in a given community, the lower per-rider accident rates there will be. If that ratio grows, the accident rate will go down.
The power of experience is a lot cooler than the alleged power of sheer numbers. The power of experience is proven. I think all Jacobsen was observing was that power of experience, and the vast differences in crash likelihood among different types of bicyclists.
Safety in Numbers is extremely seductive to beginner cyclists and green advocates because it transfers responsibility for the cyclist's safety away from the individual cyclist to drivers. So much easier. People don't want that responsibility. And it provides a seemingly easy answer to the problem of bike safety -- just attract more bicyclists.
It's impressive how bogus the whole thing is, and how people who apparently slept through junior high science class have been beating their Safety in Numbers drums.
I haven't seen anything that would steer me away from the conclusion that Safety in Numbers phenomenon is really a measure of the average age and experience level of a cycling population, not about the overall number.... the greater the ratio of adult commuter cyclists to kid cyclists and drunks in a given community, the lower per-rider accident rates there will be. If that ratio grows, the accident rate will go down.
The power of experience is a lot cooler than the alleged power of sheer numbers. The power of experience is proven. I think all Jacobsen was observing was that power of experience, and the vast differences in crash likelihood among different types of bicyclists.
Safety in Numbers is extremely seductive to beginner cyclists and green advocates because it transfers responsibility for the cyclist's safety away from the individual cyclist to drivers. So much easier. People don't want that responsibility. And it provides a seemingly easy answer to the problem of bike safety -- just attract more bicyclists.
It's impressive how bogus the whole thing is, and how people who apparently slept through junior high science class have been beating their Safety in Numbers drums.
I am not trying to ascribe too much worth to the Jacobsean effect, the reported, replicated increase in cyclists counts and nearly flat collision rates in cities that have seen faint booms in ridership in the last five years or so.
Transportation engineering allows traffic counts to be indexed to collision rates. There are widespread and irrefutable increases in the numbers of cyclists - commuter counts, american community survey numbers, and widespread anecdotal reports all indicate a boom in cycling in a number of american cities. A number of these cities are also reporting nearly flat reported numbers of collisions and crashes concurrent with these recorded increases in the numbers of cyclists.
I believe this is, bluntly, the result of more motorists becoming more accustomed to seeing more cyclists more frequently and interacting to a greater level of consideration and safety around bicycle traffic.
Calling it 'safety in numbers' may do this reported and repeated phenomenon a disservice, but the trend is clear - more cyclists, about the same number or even decreasing numbers of crashes. Minneapolis recorded a 20 percent decline in serious reported crashes as ridership boomed.
This trend isn't likely a result of the topology of riders getting more road savvy, or less kids cycling. New York rider counts swelled from 100,000 to 180,000 in just 4 years - there's going to be plenty of ninja, salmoning, drunken and relatively inexperienced cycling going on with that level of uptake in NYC. That's a huge sway in ridership that's not related to less kids bicycling. 90 percent of the riders in US communities are considered by the FHWA to be basic or beginner cyclists.
I understand your belief that the data is too murky to contribute anything useful, but the trend is clear in city after city keeping track - there's more people biking, and the crash rates aren't going up.
Last edited by Bekologist; 02-13-11 at 11:10 PM.
#35
Cycle Year Round
Now we are back to Bek repeating himself without offering a complete validated study.
Just more of Bek's "I believe".
Just more of Bek's "I believe".
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#36
totally louche
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the studies are there, my friend.
That's what the recent news update at the League of American Bicyclists was all about - another city - Minneapolis, wasn't it? reporting increased numbers of cyclists concurrent with nearly flat crash rates - a decline in the indexed crash rate for bicyclists in a number of cities - over the last few years of recorded commuter counts.
That's what the recent news update at the League of American Bicyclists was all about - another city - Minneapolis, wasn't it? reporting increased numbers of cyclists concurrent with nearly flat crash rates - a decline in the indexed crash rate for bicyclists in a number of cities - over the last few years of recorded commuter counts.
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RobertHurst,
Eventually there are too few kids left riding, at the start, for them to make much impact on the statistics either way. While commuting cyclists went up by 80% did the kids slow down their riding enough to offset that?
Besides, the most obvious and provable thing is that this coincides with Lance's post cancer success. I think we should all send him a nice thank you and tell congress that we don't mind if he doped, cause the hillbillies remember we're people now that he "showed up d'em der frenchies."
On a more serious note. The League really likes commuters, but I'm guessing MN has a more impressive rise in cyclists involved in the sport of it. Somebody go find out what the changes are in USAC licenses in the area...
Eventually there are too few kids left riding, at the start, for them to make much impact on the statistics either way. While commuting cyclists went up by 80% did the kids slow down their riding enough to offset that?
Besides, the most obvious and provable thing is that this coincides with Lance's post cancer success. I think we should all send him a nice thank you and tell congress that we don't mind if he doped, cause the hillbillies remember we're people now that he "showed up d'em der frenchies."
On a more serious note. The League really likes commuters, but I'm guessing MN has a more impressive rise in cyclists involved in the sport of it. Somebody go find out what the changes are in USAC licenses in the area...
#38
Cycle Year Round
Once again, so YOU (Bek) say without providing any that meet any type of scientific methodology.
Just more of 'but the article says so'.
Just more of 'but the article says so'.
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#39
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Ok, but much less so than kids, drunks, ninjas and inexperienced riders.
#41
totally louche
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the more axe grinders, the more people will know they're there, man. better watch out.
Occam's razor.
Occam's razor.
#42
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#43
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or a study.
Cities could compile annual counts of axe grinders, and compare them to the numbers of axe accidents.
Cities could compile annual counts of axe grinders, and compare them to the numbers of axe accidents.
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My guess is that there are two factors. If a motorist is used to passing at least one cyclist on a given trip, they get used to doing it and not panic so much when they see a cyclist. If they see many cyclists, they will be a lot more likely to expect to see a cyclist. Finally, if they see even more cyclists than that, they realize that it's a normal mode of travel and nothing to get obnoxious about.
Even though there are a fair number of cyclists around here, I make plenty of trips by car when I don't see even one.
Even though there are a fair number of cyclists around here, I make plenty of trips by car when I don't see even one.
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How are "predictable cyclists following best practices" defined for crash reporting statistics? What are the personality or cycling characteristics/metrics that allows predictable cyclists following best practices to be distinguished from any other cyclist involved in an accident? Is it they happened to be cycling in accordance with the law at the moment of the accident or something else? Do cyclists who cycle (or not cycle) in available bike lanes qualify for this description?
Never knew that predictable cyclists following best practices (by any definition) was ever a recordable entry in any accident report or credible statistical study.
Never knew that predictable cyclists following best practices (by any definition) was ever a recordable entry in any accident report or credible statistical study.
#46
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Originally Posted by robert hurst
I agree that's kind of how it works. The question is to what degree does this show up in the stats, compared to other things which are probably a lot more important to overall accident rates.
what degree does this show up in the stats- let's see......
yep, looks like there's more cycling going on in minneapolis, and less crashes. a declining trend in the bicyclist crash rate, indexed to ridership.
It's arguable that this could be a result of the greater normalization of cycling as a road activity. Ever growing numbers of cyclists lending itself to observable, positive safety trends from a 'critical mass' of bicyclists.
Much less convincing is the hypothesis of a corn-fed super race of intuitively competent Minnesotan bike commuters springing out of the raw cloth of erstwhile suburban prairie schooner captains.
Last edited by Bekologist; 02-13-11 at 11:53 PM.
#47
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a story here league of american bicyclists report on minneapolis phenomenon showing minneapolis as yet another city that is exhibiting a safety in numbers phenomenon amongst the population there.
as more people cycle in minneapolis -in no small part as a result of Hennepin county and the twin cities cities planning for bicycle traffic - there are less crashes and collisions.
I think Robert Hurst likes to ascribe this affect as being somehow an indicator of a maturing of the cycling population. I hope i characterized his take on safety in numbers correctly.
The evidence i believe, indicates something much more pervasive and systematic than the explanation that bicyclists from earlier bike booms have now matured into skilled traffic cyclists.
The bicycling population represents a wide range of ethnographic diversity and skill levels in all the cities recording this 'safety in numbers' phenomenon.
As more people ride in a community, motor vehicle operator and bicyclist interactions become more normalized.
Bluntly, more motorists are more cognizant of more bicyclists.
Less recorded serious crashes and collisions seem to be one of the results from planning, programs and a cultural ethos that support roadway bicycling.
as more people cycle in minneapolis -in no small part as a result of Hennepin county and the twin cities cities planning for bicycle traffic - there are less crashes and collisions.
I think Robert Hurst likes to ascribe this affect as being somehow an indicator of a maturing of the cycling population. I hope i characterized his take on safety in numbers correctly.
The evidence i believe, indicates something much more pervasive and systematic than the explanation that bicyclists from earlier bike booms have now matured into skilled traffic cyclists.
The bicycling population represents a wide range of ethnographic diversity and skill levels in all the cities recording this 'safety in numbers' phenomenon.
As more people ride in a community, motor vehicle operator and bicyclist interactions become more normalized.
Bluntly, more motorists are more cognizant of more bicyclists.
Less recorded serious crashes and collisions seem to be one of the results from planning, programs and a cultural ethos that support roadway bicycling.
it's the ones who have no experience with cyclists that like to think that 'get on the sidewalk' is actually going to change the way i ride.
#48
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i think this is true. in fact, i've discovered that by riding my bike on the same commute route everyday, the motorists who also ride my route at that time learn to expect me and how to maneuver around me more easily.
it's the ones who have no experience with cyclists that like to think that 'get on the sidewalk' is actually going to change the way i ride.
it's the ones who have no experience with cyclists that like to think that 'get on the sidewalk' is actually going to change the way i ride.
Last edited by billdsd; 02-14-11 at 04:59 AM.
#49
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interesting, billdsd. if true, it would make us more hesitant to engage in middle-finger pointing at motorists, which would be counterproductive. not that i'm innocent you understand...
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BTW what is the significance of any so-called "crash rate " statistics/metrics that does not take into account the various severity level of the injuries (if any) that are the product of the "crashes."