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                                                                     Exhibit 24B

                                POWER OF ATTORNEY

         KNOW ALL MEN BY THESE PRESENTS, that the person whose signature appears
below constitutes and appoints Vicki A. O'Meara, David M. Beilin and Carlos J.
Abarca, and each of them, his or her true and lawful attorney-in-fact and agent,
with full power of substitution and resubstitution, for the undersigned and in
his or her name, place and stead, in any and all capacities, to sign the Ryder
System, Inc. Form S-8 Registration Statements and/or the Post-Effective
Amendments to the Form S-8 Registration Statements for the Ryder System, Inc.
1995 Stock Incentive Plan, and the Ryder System, Inc. Directors Stock Plan, and
any and all amendments thereto, and to file the same, with all exhibits thereto
and other documents in connection therewith, with the Securities and Exchange
Commission, and with the New York Stock Exchange, Chicago Stock Exchange, and
Pacific Exchange, granting unto each said attorney-in-fact and agent full power
and authority to do and perform each and every act thing requisite and necessary
to be done in and about the premises, as fully to all intents and purposes as
they might or could do in person, hereby ratifying and confirming all that each
said attorney-in-fact and agent, or his or her substitute or substitutes, may
lawfully do or cause to be done by virtue thereof.

                                        /s/ JOSEPH L. DIONNE
                                        ---------------------------------------
                                        Joseph L. Dionne


STATE OF FLORIDA   )
                   )    ss:
COUNTY OF DADE     )

Before me appeared Joseph L. Dionne, personally known to me and known to me to
be the person described in and who executed the foregoing instrument, and
acknowledged to and before me this 26th day of July, 2001 that he or she
executed said instrument for the purposes therein expressed.


                                       Witness my hand and official seal:



                                       /s/ DELORES CLARK
                                       -----------------------------------------
                                       Notary Public

My commission expires: