U.S. Department of Transportation
Federal Highway Administration
400 Seventh St., S.W.
Washington, D.C. 20590

Refer to: HOTO-1

Mr. Toby Rickman
State Traffic Engineer
Washington State Department of Transportation
P.O. Box 47300
Olympia, WA 98504-7300

Dear Mr. Rickman:

We have received your April 27 letter furnishing additional information regarding your request for approval to experiment with in-roadway flashing warning lights (IV-165(Ex)).

We have reviewed the material that was submitted and find it to be suitable in support of your request to experiment. Therefore, your request to experiment for 3 years under the provisions of the Manual on Uniform Traffic Control Devices with in-roadway flashing warning lights at crosswalks is hereby approved.

We look forward to reviewing your first semiannual progress report early next year. If we can be of further assistance, please contact Ms. Louisa M. Ward on 202-366-4372.

Sincerely yours,

Shelley J. Row, P.E.
Director, Office of Transportation Operations