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			SDOT Photos posted a photo:	Eastbound traffic on Mercer Street was shifted on Jan 30, 2012 to the newly constructed lanes on the north side of the street. The new, wider sidewalk is also now open for use.  Next, the contractor will work on the southern side of the streets. When completed, the street will be a two-way boulevard.

			SDOT Photos posted a photo:	Eastbound traffic on Mercer Street was shifted on Jan 30, 2012 to the newly constructed lanes on the north side of the street. The new, wider sidewalk is also now open for use. Next, the contractor will work on the southern side of the streets. When completed, the street will be a two-way boulevard.

			SDOT Photos posted a photo:	Mercer Corridor Project; South Lake Union, Seattle, WA

			SDOT Photos posted a photo:	Mercer Corridor Project; South Lake Union, Seattle, WA
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Federal Highway Administration’s June 2010 “Road Diets” Report

The USDOT’s Federal Highway Administration (FHWA) recently released a report that reviewed the safety record of lane reduction projects in California, Washington and Iowa.  Their analysis confirms that lane reduction projects calm traffic and reduce traffic collisions. 

And the FHWA report also confirms that rechannelizations don’t adversely impact roadway capacity.  It states, “Under most annual average daily traffic (AADT) conditions tested, road diets appeared to have minimal effects on vehicle capacity because left-turning vehicles were moved into a common two-way left-turn lane (TWLTL).”

You can read the full document, entitled “Evaluation of Lane Reduction ‘Road Diet’ Measures on Crashes,” by clicking here.

2 Responses to “Federal Highway Administration’s June 2010 “Road Diets” Report”

  1. [...] per hour. When a street is designed like a four-lane highway, cars move closer to highway speeds. Study after study after case after case has shown that a street with dangerous speeds can be redesigned [...]

  2. [...] snarled traffic (or at least traffic that is worse than it already is). Yet, research (including this new report by the Federal Highway Administration) clearly supports the functionality of this three lane [...]

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