Federal Highway Administration
400 Seventh Street, SW
Washington, DC 20590

Refer to: HOTO-1

Mr. James C. Slifer
Director of Highways
Illinois Department of Transportation
2300 South Dirksen Parkway
Springfield, IL 62764

Dear Mr. Slifer:

Thank you for your July 31 letter requesting experimentation with the "SLOW DOWN MY DADDY (MOMMY) WORKS HERE" signs.

Your evaluation plan has been reviewed and approved with the understanding that the signs will have orange letters on black background.

For future reference purposes, we have assigned your request the following official experimentation number and title: 6-184(E) - SLOW DOWN MY DADDY (MOMMY) WORKS HERE.

We appreciate the effort that you and your staff put in developing this evaluation plan and look forward to reviewing your report following completion of the experimentation. If you have any question during your experimentation, please contact Mr. Charles Sears at 202-366-1555.

Sincerely yours,

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