Aparkalypse now…politics of #parking http://www.Economist.com/news/leaders/21720281-average-car-moves-just-5-time-improve-cities-focus-other-95-perilous Determining of congestion more than roads, the white space of city planning
Posts Tagged ‘bikesafe0mg’
We still don’t really know how bicycles work
January 20, 2017We still don’t really know how #bicycles work
http://www.NewStatesman.com/science/2013/08/we-still-don%E2%80%99t-really-know-how-bicycles-work Still rides upright with special wheels cancelling gyroscopic effect
QT:{{”
“The most definitive analysis came exactly a century later. It involved an experimental bicycle that had all its gyroscopic effects cancelled out by a system of counter-rotating wheels. The effort of building such a strange contraption was worth it: the resulting paper was published the prestigious journal Science.
The publication plunged bicycle dynamics back into chaos. It turns out that taking into account the angles of the headset and the forks, the distribution of weight and the handlebar turn, the gyroscopic effects are not enough to keep a bike upright after all. What does? We simply don’t know. Forget mysterious dark matter and the inexplicable accelerating expansion of the universe; the bicycle represents a far more embarrassing hole in the accomplishments of physics.”
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Paper bike helmet wins Dyson award – BBC News
November 17, 2016Paper bike helmet wins @JDF award
http://www.bbc.com/news/technology-38004215 ~$4 foldup @EcoHelmet might be useful for shared #bikes; degrades after a few uses
bikes in NYC
October 11, 2016#Bike lanes are a sound public health investment
http://www.reuters.com/article/us-health-costbenefit-bike-lanes-idUSKCN11Z23A Each $1.3K for NYC provides 1 additional QALY for city residents
….But perhaps non-riders benefit more than riders (who are at risk for injury) cc @dspakowicz
New study of the economics of adding more bikes to NYC (ironically published in the journal “injury prevention”).
article: http://injuryprevention.bmj.com/content/early/2016/09/09/injuryprev-2016-042057.abstract
pop press article:
http://www.reuters.com/article/us-health-costbenefit-bike-lanes-idUSKCN11Z23A
QT:{{”
Every $1,300 New York City invested in building bike lanes in 2015 provided benefits equivalent to one additional year of life at full health over the lifetime of all city residents, according to a new economic assessment.
That’s a better return on investment than some direct health treatments, like dialysis, which costs $129,000 for one
quality-adjusted life year, or QALY, said coauthor Dr. Babak Mohit of the Mailman School of Public Health at Columbia University in New York.
…
Painting unprotected bike lanes into roads may not reduce injury and death, she said.
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The Road Ahead » American Scientist
September 18, 2016The Road Ahead http://www.AmericanScientist.org/issues/feature/2016/4/the-road-ahead A future w. sensors in cars, roads & bridges. Could they also be added to #bikes to avoid collisions?
