Jan Heine copenhagenista smack down II (with citations, statistics, and diagrams)
#52
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Heine in response to bekologist:
Utopia aside, look at the “protected” lanes that are being installed in Seattle, Chicago and Washington DC. Everybody agrees that they are unsafe, yet advocates like you are working hard to get more of these ludicrous facilities.
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obviously, Jan too likes to fabricate strawmen positions of others, he then rallies against.
Paradoxically, Jan Henie endorses and is working at getting 'protected lanes' - cycle tracks - in spots around seattle.
like a fight of one in a wet paper bag! there's a nazi in this bag, see...
Paradoxically, Jan Henie endorses and is working at getting 'protected lanes' - cycle tracks - in spots around seattle.
like a fight of one in a wet paper bag! there's a nazi in this bag, see...
Last edited by Bekologist; 05-23-13 at 01:56 PM.
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Example:Mass Ave going uphill from Little Falls Parkway to the Western Ave circle. It's fairly steep at one point,has two lanes,and a narrow sidewalk that follows it. Forrester would prolly suggest taking the right lane and mashing up the hill. But traffic rarely does the speed limit,the drivers are very aggressive,there's no shoulder,and the curb is high. So you get buzzed constantly,and unless you're a champion bunny-hopper,don't really have an escape if things get bad. Hurst would suggest what I did when I took this route;I'd run the sidewalk up the hill until the road flattened and traffic started to slow to approach the circle and where there were cars pulling out of side streets. The sidewalk was less than ideal,but I think I only ever encountered a ped like twice,so it was a completely safe way to get up the hill(and legal in this area).
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#57
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Quoted to make you drink.
I like separate paths, especially the shortcuts and detours through parks instead of next to roads, but that is extra infrastructure, especially at bridges. What we already have is underfunded, neglected, and crumbling.
I like separate paths, especially the shortcuts and detours through parks instead of next to roads, but that is extra infrastructure, especially at bridges. What we already have is underfunded, neglected, and crumbling.
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Your point about neglect and poor maintenance is spot on.
Interestingly, poor maintenance was one of the reasons there was a rebellion against physically separated infrastructure in germany.
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protected bike lanes offer vast safety advantage
"researchers found that in Vancouver and Toronto, protected green lanes reduce non-fatal road injuries by 90 percent.
That's a huge impact. When it comes to reducing major injuries, these findings suggest that converting a painted bike lane to a separated cycle track would be twice as effective as painting the bike lane was."
"researchers found that in Vancouver and Toronto, protected green lanes reduce non-fatal road injuries by 90 percent.
That's a huge impact. When it comes to reducing major injuries, these findings suggest that converting a painted bike lane to a separated cycle track would be twice as effective as painting the bike lane was."
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What does the graphic propose to show? there is no scale on it, so its meaningless
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If you look closely, you can see the circles, arrows and paragraph on the back of it explaining how it can be used against Jan Heinie's specious commentary about cycle tracks.
That old traffic adverse hypocrite! Endorsing some of the cycle track installations in Seattle, while at the same time posting contrived, strawman arguments against them, falsely framing bike safety basics and using skewed data not representative of North American cycle tracks.
Methinks Jans' just miffed. Despite his prowess as a randonneur, he considers the nearby Aurora ave shared lane bikeway unsafe. I'm presuming he's frustrated he doesn't ride the shared lane Aurora Ave bikeway with the actual traffic big dogs, considers it "unfit and unsafe for cycling".
To make himself feel better about his traffic trepidations he projects his anger stemming from the traffic onto sensible cycle track installations, which are remarkably similar to other cycle track installations he endorses around Seattle.
Is the criticism of cycle tracks the frustrated traffic musings of the proud yet traffic adverse (sic) 'effective' cyclists, convinced their riding skills are the metric for which cycle accommodation should be drawn? Only so much traffic, and then, like Jan Heinie said at his blog the other day, that full traffic separation is his "first choice always" if it can be done well.
Q: How does Jan Heine get to the Performance bike shop on the Eastside?
A: The roads that lead to it are unfit for cycling.
Last edited by Bekologist; 05-23-13 at 09:34 PM.
#62
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I was referring to the just posted bike safety spectrum, its referenced to the American Journal of Public Health, but no journal I ever read would allow such a crappy, unlabeled unclear plot.
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sorry you don't 'get' what the graphic represents.
did you read the article, since you cant grok the graphic?
Abstract:
"Of 14 route types, cycle tracks had the lowest risk (adjusted odds ratio [OR] = 0.11; 95% confidence interval [CI] = 0.02, 0.54), about one ninth the risk of the reference: major streets with parked cars and no bike infrastructure. Risks on major streets were lower without parked cars (adjusted OR = 0.63; 95% CI = 0.41, 0.96) and with bike lanes (adjusted OR = 0.54; 95% CI = 0.29, 1.01). Local streets also had lower risks (adjusted OR = 0.51; 95% CI = 0.31, 0.84). Other infrastructure characteristics were associated with increased risks: streetcar or train tracks (adjusted OR = 3.0; 95% CI = 1.8, 5.1), downhill grades (adjusted OR = 2.3; 95% CI = 1.7, 3.1), and construction (adjusted OR = 1.9; 95% CI = 1.3, 2.9).
Conclusions. The lower risks on quiet streets and with bike-specific infrastructure along busy streets support the route-design approach used in many northern European countries. Transportation infrastructure with lower bicycling injury risks merits public health support to reduce injuries and promote cycling."
Read More: https://ajph.aphapublications.org/doi...PH.2012.300762
did you read the article, since you cant grok the graphic?
Abstract:
"Of 14 route types, cycle tracks had the lowest risk (adjusted odds ratio [OR] = 0.11; 95% confidence interval [CI] = 0.02, 0.54), about one ninth the risk of the reference: major streets with parked cars and no bike infrastructure. Risks on major streets were lower without parked cars (adjusted OR = 0.63; 95% CI = 0.41, 0.96) and with bike lanes (adjusted OR = 0.54; 95% CI = 0.29, 1.01). Local streets also had lower risks (adjusted OR = 0.51; 95% CI = 0.31, 0.84). Other infrastructure characteristics were associated with increased risks: streetcar or train tracks (adjusted OR = 3.0; 95% CI = 1.8, 5.1), downhill grades (adjusted OR = 2.3; 95% CI = 1.7, 3.1), and construction (adjusted OR = 1.9; 95% CI = 1.3, 2.9).
Conclusions. The lower risks on quiet streets and with bike-specific infrastructure along busy streets support the route-design approach used in many northern European countries. Transportation infrastructure with lower bicycling injury risks merits public health support to reduce injuries and promote cycling."
Read More: https://ajph.aphapublications.org/doi...PH.2012.300762
#64
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I just went to the blog that the figure was taken from. I think that I should not have go to a third reference to understand what a poster was trying to demonstrate. The graphic remains very uninformative and unprofessional. The abstract states much more clearly the point to be made. Thanks
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in a thread about copenhagenistas in the woodpile, and criticisms by traffic timid randonneurs using fallacious arguments against cycle tracks, which the timid randonneur paradoxically supports elsewhere in his city, sorry you expected APA references to scholarly data.
Q: How does Jan Heine ride his bike to the Denny's on Aurora?
A: The road that leads to it he considers unfit for cycling.
#66
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No, I expect that in a discussion that items posted in support of a position be understandable, and if they are deficient then an explanation should be included. You think not thats fine, but to me then it becomes a insiders club game, good enough for you I guess.
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NO ONE is making those decisions. The 'one size fits all bike sidewalks everywhere' advocate simply doesn't exist in real life.
The only place that advocacy happens is in the minds of the fearmongers and obstructionists of better bike planning. These hysteric individuals post in like minded usergroups of the equally deluded elsewhere on the internets.
The same thing is happening on a different five-block road rebuild here. The surviving three plans are to leave this commercial/commuter road as a two lane each way road, road diet to bike lanes each way with a two-way left turn lane between one travel lane each way, or do the two-way left turn lane with a travel lane each way and put the bikes on the sidewalk. Again, this is a commercial strip with lots of driveways and complicated/busy intersections at each end. The sidewalk-rider option wouldn't have made the final cut if Bek's statement were true.
Another drink, Spare_Wheel.
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The thread belongs in the regional discussion group appropriate for those two specific cities.
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I disagree. My city traffic planners look to what Portland and Seattle are doing and attempt to copy it. I suspect this happens all over the country. I have sat in webinars at my city's engineering office and observed presentations on these types of facilities. Questions come in from many regions of the country. Perhaps your little hamlet doesn't participate, but that doesn't mean that this is only relevant to a couple of cities.
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I disagree. My city traffic planners look to what Portland and Seattle are doing and attempt to copy it. I suspect this happens all over the country. I have sat in webinars at my city's engineering office and observed presentations on these types of facilities. Questions come in from many regions of the country. Perhaps your little hamlet doesn't participate, but that doesn't mean that this is only relevant to a couple of cities.
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These are quixotic and fabricated demons, the phantom 'copenhagenistas' at the street corner.
In Eugene, there's probably some select routes the planning commission is trying to beef up and separate from car traffic. I'm not a fan of poorly designed bike infrastructure, but i strongly suspect a lot of what's being critized by the critics isn't as kryptonic to safe riding as they suggest.
The same thing is happening on a different five-block road rebuild here. The surviving three plans are to leave this commercial/commuter road as a two lane each way road, road diet to bike lanes each way with a two-way left turn lane between one travel lane each way, or do the two-way left turn lane with a travel lane each way and put the bikes on the sidewalk. Again, this is a commercial strip with lots of driveways and complicated/busy intersections at each end. The sidewalk-rider option wouldn't have made the final cut if Bek's statement were true.
But i agree with Jan, given the appropriate intersection treatments, even busy shopping centers and cement plants can co-exist with cycletracks.
Last edited by Bekologist; 05-24-13 at 04:31 AM.
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Maybe the 'squabble' is over Jan Heine being hypocritical? Doesn't like the cycletrack, won't ride the main roads nearby
Q:How does Jan get to the Kmart on Aurora?
A: He doesn't; Jan considers the street, even with a shared lane bikeway, 'unfit for cycling.'
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protected bike lanes offer vast safety advantage
"researchers found that in Vancouver and Toronto, protected green lanes reduce non-fatal road injuries by 90 percent.
That's a huge impact. When it comes to reducing major injuries, these findings suggest that converting a painted bike lane to a separated cycle track would be twice as effective as painting the bike lane was."
"researchers found that in Vancouver and Toronto, protected green lanes reduce non-fatal road injuries by 90 percent.
That's a huge impact. When it comes to reducing major injuries, these findings suggest that converting a painted bike lane to a separated cycle track would be twice as effective as painting the bike lane was."
Michael Andersen is full of ****. First of all, that graphic does not appear in the cited publication. It is something that Michael Andersen concocted based on ignorance of basic statistics. Attributing that graphic to the manuscript in question is unethical.
The simple regression analysis conducted by Teschke et al did not compare bike lanes to cycle tracks. It compared cycle tracks to a reference sample. There is absolutely no evidence in that manuscript that cycle tracks are statistically safer than bike lanes. Moreover, the fully separated MUP category was nominally more dangerous than bike lanes. This is, of course, just as meaningless statistically as the comparison Andersen ignorantly tried to make. I should also point out that the "n" for cycle tracks was "10" and that intersections were not properly considered in that study.
If you do not believe me here is the manuscript source:
https://ajph.aphapublications.org/doi...PH.2012.300762
Jan Heine is correct when he stated that the bulk of studies in Europe (with "n"s far larger than 10) suggest that cycle tracks are less safe than on street paths due to increased risk at intersections.
Quotes from his blog posting with links to PDFs of published manuscripts:
Separate paths are less safe: Numerous people posted links to safety studies. There appears to be general agreement that separated cycle paths are less safe at intersections. Data from Berlin and Denmark show a marked increase of cyclist (and pedestrian) injuries at intersections after cycle paths were put in. (The results were adjusted for the increase in ridership.)
If you want to verify the above, check out this bef0re-and-after study from Copenhagen, as well as this study from Agerholm and this one from Copenhagen. The official Copenhagen study concluded: “The cycle tracks have resulted in increases of accidents and injuries of 9-10%.
Last edited by spare_wheel; 05-24-13 at 09:40 AM.