Thursday, July 30, 2015

Mr. Padgett's Blues: "10-Foot Traffic Lanes Are Safer—and Still Move Plenty of Cars."

Narrow lanes are safer

Cars in wider lanes tend to go faster

Narrow lanes still carry lots of traffic

Evidence and factual research keep piling up. Jeff Gahan remains aloof, refusing to publicly embrace evidence and factual research.

Remember: You are invited to listen as Dr. John Gilderbloom preaches his "gospel of things urban" on Tuesday, August 4, at the library.

The smart money says that City Hall will boycott this meeting. It's what you do when you're completely out of touch, but hey -- let's all go swimming.

10-Foot Traffic Lanes Are Safer—and Still Move Plenty of Cars: The case against 12-foot lanes in cities, in 3 charts, by Eric Jaffe (City Lab)

... a new study by civil engineer Dewan Masud Karim (spotted by Chris McCahill at the State Smart Transportation Initiative) ... evaluating dozens of intersections in Toronto and Tokyo, Karim linked lower crash rates to narrower lanes—those closer to 10- or 10.5-feet wide than to 12-feet. Sure enough, wider lanes meant speedier cars, and yet narrower lanes were perfectly capable of moving high volumes of traffic.

He concludes:

Given the empirical evidence that favours ‘narrower is safer’, the ‘wider is safer’ approach based on intuition should be discarded once and for all. Narrower lane width, combined with other livable streets elements in urban areas, result in less aggressive driving and the ability to slow or stop a vehicle over shorter distances to avoid a collision.

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