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Tag Archives: safety
Lane Control on Lexington Street
Here’s a video showing a bicycle ride on a constant mile-long upslope, at speeds of 10 to 12 miles per hour (16 to 20 km/h), on a suburban 4-lane speedway with narrow lanes and no shoulders, the most challenging street … Continue reading
Posted in Bicycling
Tagged bicycle, Bicycling, Boston, lane, lane control, law, Lexington, Massachusetts, motor vehicle, pedestrian, safety, traffic, vehicle, Waltham
4 Comments
Helmet disparagement and ethics
To quote the late, great Dutch traffic engineer Hans Monderman, “Never treat anyone in the public sphere like an idiot. If you treat him like an idiot, he will act like an idiot.” Providing helmets is difficult when bicycles are … Continue reading
M. Kary on the epidemiological approach to traffic-safety research
M. Kary has released the manuscript of his paper on the unsuitability of the epidemiological approach in studying traffic safety. Unsuitability of the Epidemiological Approach to Bicycle Transportation Injuries and Traffic Engineering Problems Author: M Kary Injury Prevention 2015;21:73-76, Published … Continue reading
Posted in Bicycling
Tagged Anne Lusk, bias risk, BICE, bicycle, Bicycling, bicyclist, diversion bias, epidemiological, epidemiology, Harris, helmet, Kary, Lusk, M. Kary, research, safety, scientific method, Teschke, Toronto, Vancover
7 Comments
A review of the film Bikes vs. Cars
I knew I’d have a problem with the film just based on the the title. There can be animosity between people on bikes and in cars, but bikes and cars are machines, which have no feelings and generally don’t get … Continue reading
Another crosswalk confusion, and a fatality
In response to my post about confused yielding requirements where shared-use paths cross streets, Ryan Reasons has published comments on a recent fatal truck-bicycle crash in the Seattle, Washington area. The photo below is from the KOMO TV/radio station news … Continue reading
Some thoughts about self-driving cars
Google’s report on its self-driving cars: http://static.googleusercontent.com/media/www.google.com/en/us/selfdrivingcar/files/reports/report-0515.pdf Most than half of the collisions reported in this document are slow-speed rear-enders of the Google cars. That’s unusual. It might be that the behavior of the Google cars is more cautious than … Continue reading
Change lanes in a roundabout?
Ohio cyclist Patricia Kovacs posted an e-mail asking some questions about roundabouts: Ohio engineers are telling us to use the inner lane for left turns and U turns. Both the FHWA [Federal Highway Administration] and videos available on our local … Continue reading
Posted in Bicycling, Bike lanes, Roundabouts, traffic circles, Traffic Signals
Tagged bicycle, Bicycling, bike lane, crash, crosswalk, pedestrian, rotary, roundabout, safety, traffic, traffic circle, vehicle, video
13 Comments
When slow is too fast
The basic speed limit, not to go too fast under the existing conditions, is often lower than the posted speed limit. When facilities like the bike lane in the video are built in which 10 mph, or even 5 mph, … Continue reading
Posted in Bicycling, Bike lanes
Tagged bicycle, Bicycling, bike lane, collision, crash, safety
13 Comments
Monsere, Dill et al. — Not Yet a Review, But…
M. Kary, who prepared a review of the Lusk et al Montreal study, has had a preliminary look at the Monsere, Dill et al. study of barrier-separated on-street bikeways (“cycle tracks”) which the bicycle industry lobby PeopleforBikes is promoting as … Continue reading
Posted in Bicycle facilities, Bicycling, Cycle tracks
Tagged an Francisco, Austin, bicycle, Bicycling, bikeway, Chicago, collision, conflict, crash, cycle track, cycle tracks, DC, District of Columbia, pedestrian, Portland, protected, research, safety, sidepath, traffic, vehicle, video, Washington
6 Comments
Berri at Cherrier, Montreal
Gerald Fittipaldi, who is on an e-mail list with me, has posted a video on Flickr of cyclists traveling through an intersection where a two-way bikeway turns from one street to the other. Clicking on the link above or the … Continue reading
Posted in Bicycling, Cycle tracks, Sidepaths
Tagged bicycle, Bicycling, bike box, crosswalk, cycle track, cycle tracks, Montreal, protected, safety, traffic signal, video
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