EXHIBIT 99.a

CEO Certification of Periodic Report under Section 906 of the
Sarbanes-Oxley Act

I,  Joseph J. Ross,  Chairman  and Chief  Executive  Officer  of Federal  Signal
Corporation   (the  "Company"),   certify,   pursuant  to  Section  906  of  the
Sarbanes-Oxley Act of 2002, 18 U.S.C.  Section 1350, that:

(1) the Annual  Report on Form 10-K of the Company  for the year ended  December
    31, 2002 (the  "Report")  fully  complies with the  requirements  of Section
    13(a) or 15(d) of the  Securities  Exchange  Act of 1934 (15  U.S.C.  78m or
    78o(d)); and

(2) the  information  contained in the Report fairly  presents,  in all material
    respects, the financial condition and results of operations of the Company.

Dated:  March 27, 2003


                                    /s/ Joseph J. Ross
                                  Joseph J. Ross
                                  Chairman and Chief Executive Officer