EXHIBIT 5

                                 MARCH 25, 2002

Yellow Corporation
10990 Roe Avenue
P.O. Box 7563
Overland Park, Kansas 66207

                             Re: Yellow Corporation

Ladies and Gentlemen:

     We have acted as counsel to Yellow Corporation, a Delaware corporation (the
"Company"), in connection with the preparation and filing with the Securities
and Exchange Commission (the "Commission") under the Securities Act of 1933, as
amended (the "Act"), of the Registration Statement on Form S-3 filed by the
Company with the Commission on March 14, 2002, as amended (the "Registration
Statement"), with respect to the offering and sale by the Company of an
aggregate of 3,910,000 shares (the "Shares") of common stock, $1.00 par value,
of the Company (the "Common Stock") comprised of 3,400,000 shares of Common
Stock offered by the Company and 510,000 shares of Common Stock offered by
Company, pursuant to the exercise of the over-allotment option by the
Underwriters.

     We have examined originals, photocopies or confirmed copies of all such
records of the Company and all such agreements, certificates of public
officials, certificates of officers and representatives of the Company and such
other documents as we have deemed relevant and necessary as a basis for the
opinions hereinafter expressed. In such examinations, we have assumed the
genuineness of all signatures on original documents and the conformity to the
originals of all copies submitted to us as conformed or photocopies. We have
relied, to the extent we deem such reliance proper, on certificates of officers
of the Company and other documents as to factual matters.

     Based on the foregoing and subject to the qualifications expressed herein,
we are of the opinion that:

     The Shares have been duly authorized, and, upon issuance, delivery and
payment therefor in the manner contemplated by the Registration Statement, will
be validly issued, fully paid and nonassessable.

     We hereby consent to the use of this opinion as an exhibit to the
Registration Statement and further consent to the use of our name in the "Legal
Matters" section of the Registration Statement, including the Prospectus
constituting a part thereof, and any amendments thereto.

                                          Very truly yours,

                                          /s/ CAHILL GORDON & REINDEL