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Interpretation Letter 9(09)-19 (I) - Use of R4-11 Sign on Roads with Speed Limits above 35 mph

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U.S. Department of Transportation
Federal Highway Administration

1200 New Jersey Avenue, SE
Washington, D.C. 20590

May 11, 2011

In Reply Refer To: HOTO-1

Mr. Dirk L. Gowin
Executive Administrator
Louisville Metro Government
Department of Public Works and Assets
444 S. 5th Street, Suite 400
Louisville, KY 40202

Dear Mr. Gowin:

Thank you for your letter of May 2 requesting an official interpretation regarding whether the Bikes May Use Full Lane (R4-11) sign can be used on roadways that have speed limits above 35 mph.

It is the FHWA's official interpretation that the Bikes May Use Full Lane (R4-11) sign can be used on roadways that have speed limits above 35 mph. Section 9B.06 of the 2009 MUTCD contains no requirements or recommendations that would prohibit the use of the R4-11 sign on higher speed roadways.

For recordkeeping purposes, we have assigned the following official interpretation number and title: "9(09)-19 (I) – Use of R4-11 Sign on Roads with Speed Limits above 35 mph." Please refer to this number in any future correspondence regarding this topic.

Thank you for your interest in improving the clarity of the provisions contained in the MUTCD.

Sincerely yours,

Original signed by:

Hari Kalla for

Mark R. Kehrli
Director, Office of Transportation Operations