EXHIBIT 99.b

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

I, Stephanie K. Kushner, Vice President and Chief  Financial  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/ Stephanie K. Kushner
                               Stephanie K. Kushner
                               Vice President and Chief Financial Officer