Category Archives: Bicycling

Pennsylvania Avenue, Washington, DC: Incredible Shrinking Bike Lanes

Posted on August 18, 2010 by jsallen

Slam dunk indeed. It turned out that bicyclists were slammed, and dunked.
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Travel time and lifetime

Posted on August 10, 2010 by jsallen

Though they are not first to do this, Dutch researchers have calculated the effects of different travel mode choices on life expectancy. The study is called Do the Health Benefits of Cycling Outweigh the Risks? The researchers based their calculations … Continue reading →

Posted in Bicycling | 1 Comment

Double Crossover Diamond Interchange

Posted on July 26, 2010 by jsallen

A document from the Turner-Fairbank Highway Research Center of the US Federal Highway Administration describes a new concept in freeway interchanges, the Double Crossover Diamond Interchange. The novelty here is that the overpass operates with traffic on the left, in … Continue reading →

Posted in Bicycling | 1 Comment

Recycling bicycle inner tubes, net benefit?

Posted on June 18, 2010 by jsallen

A correspondent on the Charles River Wheelmen bicycle club e-mail list reports that a company called Liberty Tire has started a program to recycle bicycle inner tubes. This is reported in the Journal Waste and Recycling News, but “[i]t doesn’t … Continue reading →

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Massachusetts and the FHWA experimental process

Posted on June 18, 2010 by jsallen

A procedure exists through the Federal Highway Administration to encourage experimentation in transportation projects. This procedure defines new, nonstandard treatments as experimental, and requires that research data be collected, so that non-standard designs may serve to direct the standards-setting process, … Continue reading →

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It isn’t about weight

Posted on May 27, 2010 by jsallen

“Your 25-pound bicycle is no match for a 10,000 pound truck.” You’ve probably heard that before. So, if you collide with a 10,000 pound truck, the impact will be much, much worse than if you collide with a passenger car, … Continue reading →

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Guest posting: P. M. Summer on a new breed of bicycle professionals

Posted on May 27, 2010 by jsallen

P. M. Summer is the former bicycle coordinator of Dallas, Texas, who was removed from his job because of his conservative approach to bicycle facilities. I post the following with his permission: There is a whole new breed of bicycle … Continue reading →

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Research says bicyclists should run red lights?

Posted on May 20, 2010 by jsallen

Dr. Anne Lusk made an interesting comment on red lights: (quote is here): Female bicyclists in England are being killed at a higher rate than males because females wait for the green light to proceed and then are hit by … Continue reading →

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Comments on a safety-in-numbers study

Posted on May 3, 2010 by jsallen

The University of California has published a study of pedestrian crashes in Oakland, California, The Continuing Debate about Safety in Numbers—Data from Oakland, CA Judy Geyer, Noah Raford and David Ragland, Traffic Safety Center; Trinh Pham, Department of Statistics, UC … Continue reading →

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Dutch traffic jams

Posted on April 29, 2010 by jsallen

Many bicycle planners and advocates would like to suggest that increases in bicycle use lead to a decrease in motor vehicle use. The Netherlands is often held up as an example. The reality there is different. Here’s a quote from … Continue reading →

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