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FORM 4
------                                          U.S. SECURITIES AND EXCHANGE COMMISSION
[ ] Check box if no longer                              WASHINGTON, DC 20549
    subject to Section 16. Form
    4 or Form 5 obligations may            STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP
    continue. See Instruction 1(b).

          Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility
                        Holding Company Act of 1935 or Section 30(f) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person(1)|2. Issuer Name and Ticker or Trading Symbol     |6. Relationship of Reporting Person
                                         |                                                 |      to Issuer (Check all applicable)
   Zollars     William      D.           |    Yellow Corporation (yell)                    |      X    Director        10% Owner
-------------------------------------------------------------------------------------------|     -----            -----
(Last)        (First)       (Middle)     |3. IRS Identification  |  4. Statement for       |      X    Officer (give title below)
                                         |   Number of           |     Month/Year          |     -----
                                         |   Reporting Person,   |                         |           Other (specify below)
                                         |   if an Entity        |     8/01                |     -----
   10990 Roe Avenue                      |   (Voluntary)         |                         |   Chairman, President and CEO
-----------------------------------------|                       |-------------------------|----------------------------------------
               (Street)                  |                       |  5. If Amendment,       |7. Individual or Joint/Group Filing
                                         |                       |     Date of Original    |   (Check applicable line)
                                         |                       |     (Month/Year)        | X  Form Filed by One Reporting Person
 Overland Park    KS             66211   |                       |                         | --
-----------------------------------------|-------------------------------------------------|    Form Filed by More than One
(City)          (State)          (Zip)   |                                                 | -- Reporting Person
 United States                           |                                                 |
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                             TABLE I - NON-DERIVATIVE SECURITIES ACQUIRED, DISPOSED OF, OR BENEFICIALLY OWNED
-----------------------------------------------------------------------------------------------------------------------------------
1. Title of Security                  |2. Transaction| 3. Transaction|4. Securities Acquired (A)| 5. Amount of|6. Owner- |7. Nature
   (Instr. 3)                         |   Date       |    Code       |   or Disposed of (D)     | Securities  |   ship   | of
                                      |              |    (Instr. 8) |   (Instr. 3, 4 and 5)    | Beneficially| Form:    | Indirect
                                      |              |               |                          | Owned at End| Direct   | Bene-
                                      |              |---------------|--------------------------| of Month    | (D) or   | ficial
                                      |              |       |       |        | (A)  |          | (Instr. 3   | Indirect | Owner-
                                      |  (Month/Day/ |       |       |        |  or  |          |   and 4)    | (I)      | ship
                                      |   Year)      |  Code |  V    | Amount | (D)  |  Price   |             |(Instr. 4)|(Instr. 4)
--------------------------------------|--------------|-------|-------|--------|------|----------|-------------|--------- |---------
Common Stock                          |  08/17/2001  |   M   |       | 33,000 |  A   |  13.375  |             |   D      |
--------------------------------------|--------------|-------|-------|--------|------|----------|-------------|--------- |---------
Common Stock                          |  08/17/2001  |   S   |       | 33,000 |  D   |  23.40   |             |   D      |
--------------------------------------|--------------|-------|-------|--------|------|----------|-------------|--------- |---------
                                      |              |       |       |        |      |          |             |          |
--------------------------------------|--------------|-------|-------|--------|------|----------|-------------|--------- |---------
                                      |              |       |       |        |      |          |             |          |
--------------------------------------|--------------|-------|-------|--------|------|----------|-------------|--------- |---------
                                      |              |       |       |        |      |          |             |          |
--------------------------------------|--------------|-------|-------|--------|------|----------|-------------|--------- |---------
                                      |              |       |       |        |      |          |             |          |
--------------------------------------|--------------|-------|-------|--------|------|----------|-------------|--------- |---------
                                      |              |       |       |        |      |          |             |          |
--------------------------------------|--------------|-------|-------|--------|------|----------|-------------|--------- |---------
                                      |              |       |       |        |      |          |             |          |
--------------------------------------|--------------|-------|-------|--------|------|----------|-------------|--------- |---------
                                      |              |       |       |        |      |          |             |          |
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Reminder: Report on a separate line for each class of securities beneficially
owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction
4b)(v).


Over
SEC 1474 (7-96)
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FORM 4 (CONTINUED)        TABLE II -- DERIVATIVE SECURITIES ACQUIRED, DISPOSED OF, OR BENEFICIALLY OWNED
                                  (E.G., PUTS, CALLS, WARRANTS, OPTIONS, CONVERTIBLE SECURITIES)
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1. Title of Derivative  | 2. Conver-  |3. Trans- |4. Trans-   |5. Number of      |6.  Date Exer-  |7. Title and Amount |8. Price
   Security             |    sion or  |   action |   action   |   Derivative     |    cisable and |   of Underlying    |   of
   (Instr. 3)           |    Exercise |   Date   |   Code     |   Securities Ac- |    Expiration  |   Securities       |   Deriv-
                        |    Price of |  (Month/ |  (Instr. 8)|   quired (A) or  |    Date        |   (Instr. 3 and 4) |   ative
                        |    Deriv-   |   Day/   |            |   Disposed of (D)|    (Month/Day/ |                    |   Secur-
                        |    ative    |   Year)  |            |   (Instr. 3, 4,  |    Year)       |                    |   ity
                        |    Security |          |            |   and 5)         |                |                    |  (Instr. 5)
                        |             |          |            |                  |-------------------------------------|
                        |             |          |            |                  |Date   |Expira- |        | Amount or |
                        |             |          |-------------------------------|Exer-  |tion    |  Title | Number of |
                        |             |          |  Code |V   | (A)    |(D)      |cisable|Date    |        | Shares    |
------------------------|-------------|----------|-------|----|--------|---------|-------|--------|--------|-----------|------------
Employee Stock Option   |    13.375   |08/17/2001|   M   |    |        | 33,000  | 9/6/98| 9/6/06 | Common |  33,000   |   13.375
                        |             |          |       |    |        |         |       |        | Stock  |           |
------------------------|-------------|----------|-------|----|--------|---------|-------|--------|--------|-----------|------------
                        |             |          |       |    |        |         |       |        |        |           |
------------------------|-------------|----------|-------|----|--------|---------|-------|--------|--------|-----------|------------
                        |             |          |       |    |        |         |       |        |        |           |
------------------------|-------------|----------|-------|----|--------|---------|-------|--------|--------|-----------|------------
                        |             |          |       |    |        |         |       |        |        |           |
------------------------|-------------|----------|-------|----|--------|---------|-------|--------|--------|-----------|------------
                        |             |          |       |    |        |         |       |        |        |           |
------------------------|-------------|----------|-------|----|--------|---------|-------|--------|--------|-----------|------------
                        |             |          |       |    |        |         |       |        |        |           |
------------------------|-------------|----------|-------|----|--------|---------|-------|--------|--------|-----------|------------
                        |             |          |       |    |        |         |       |        |        |           |
------------------------------------------------------------------------------------------------------------------------------------


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9. Number of      |    10. Ownership       |       11. Nature of
   Derivative     |        Form of         |           Indirect
   Securities     |        Derivative      |           Beneficial
   Beneficially   |        Security:       |           Ownership
   Owned at End   |        Direct (D)      |           (Instr. 4)
   of Month       |        or Indirect (I) |
   (Instr. 4)     |        (Instr. 4)      |
------------------|------------------------|------------------------------
                  |            D           |
------------------|------------------------|------------------------------
    550,000       |            D           |
------------------|------------------------|------------------------------
                  |                        |
------------------|------------------------|------------------------------
                  |                        |
------------------|------------------------|------------------------------
                  |                        |
------------------|------------------------|------------------------------
                  |                        |
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Explanation of Responses: Inadvertent error in calculation of amount of shares
beneficially owned at end of month.

                                                                                          /s/ William D. Zollars            9/4/01
                                                                                          --------------------------------  -------
                                                                                          Signature of Reporting Person(1)    Date

** Intentional misstatements or omissions of facts constitute Federal Criminal
   Violations.
See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this form, one of which must be manually signed.
If space provided is insufficient, see Instruction 6 for procedure.
Potential persons who are to respond to the collection of information contained
in this form are not required to respond unless the form displays a currently
valid OMB Number.

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                           (Print or Type Responses)