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                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549


                                  SCHEDULE 13G


                    Under the Securities Exchange Act of 1934
                              (Amendment No.__1___)*

                                 Radio One, Inc.
 ------------------------------------------------------------------------------
                                (Name of Issuer)

                              Common Stock Class D
 -------------------------------------------------------------------------------
                         (Title of Class of Securities)

                                    75040P405
                         ------------------------------
                                 (CUSIP Number)

Check the following box if a fee is being paid with this statement [_]. (A fee
is not required only if the filing person: (1) has a previous statement on file
reporting beneficial ownership of more than five percent of the class of
securities described in Item 1; and (2) has filed no amendment subsequent
thereto reporting beneficial ownership of five percent or less of such
class.)(See Rule 13d-7).

*The remainder of this cover page shall be filled out for a reporting person's
initial filing on this form with respect to the subject class of securities, and
for any subsequent amendment containing information which would alter the
disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the Securities Exchange Act of
1934 ("Act") or otherwise subject to the liabilities of that section of the Act
but shall be subject to all other provisions of the Act (however, see the
Notes).

SEC 1745 (10-88)



 -------------------------                                   ------------------
   CUSIP NO.   75040P405                                     Page 2 of 5 Pages
 -------------------------                                   ------------------
 ------------------------------------------------------------------------------
      NAMES OF REPORTING PERSONS.
1     I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY).

      ARIEL CAPITAL MANAGEMENT, INC.
      # 36-3219058
- ------------------------------------------------------------------------------
      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)
 2                                                              (a) [_]
      Not Applicable                                            (b) [_]
- ------------------------------------------------------------------------------
      SEC USE ONLY
 3
- ------------------------------------------------------------------------------
      CITIZENSHIP OR PLACE OF ORGANIZATION
 4
      Illinois Corporation
- ------------------------------------------------------------------------------
                          SOLE VOTING POWER
                     5
     NUMBER OF
                          Ariel - 3,498,982
      SHARES       -----------------------------------------------------------
                          SHARED VOTING POWER
   BENEFICIALLY      6

     OWNED BY             Ariel - 0
                   -----------------------------------------------------------
       EACH               SOLE DISPOSITIVE POWER
                     7
    REPORTING             Ariel - 3,874,982

      PERSON       -----------------------------------------------------------
                          SHARED DISPOSITIVE POWER
       WITH          8
                          Ariel - 0
- ------------------------------------------------------------------------------
      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 9

                          Ariel - 3,874,982
- ------------------------------------------------------------------------------
      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
10
                          Not Applicable
- ------------------------------------------------------------------------------
      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
11
                          Ariel - 3,874,982/76,156,212 = 5.088%
- ------------------------------------------------------------------------------
      TYPE OF REPORTING PERSON *(SEE INSTRUCTIONS)
12
                          Ariel - IA
- -------------------------------------------------------------------------------

                      *SEE INSTRUCTIONS BEFORE FILING OUT!

*     This report is being made on behalf of John W. Rogers, Jr., Chairman and
Chief Executive Officer of Ariel Capital Management, Inc., who may be deemed to
have beneficial ownership of the securities of the issuer. Mr. Rogers disclaims
beneficial ownership of shares held by Ariel Capital Management, Inc.



                                                                 Date:  12/31/02
                                                                        --------
                                                                     Page 3 of 5

Item 1(a)         Name of Issuer

                  Radio One, Inc.
                  ---------------

Item 1(b)         Address of Issuer's Principal Executive Offices

                  5900 Princess Garden Parkway, 7/th/ Flr., Lanham, MD 20706
                  ----------------------------------------------------------

Item 2(a)         Name of Person Filing

                  Ariel Capital Management, Inc.
                  ------------------------------

Item 2(b)         Address of Principal Business Office:

                  200 E. Randolph Drive, Suite 2900, Chicago, IL 60601
                  ----------------------------------------------------

Item 2(c)         Citizenship:

                  an Illinois corporation
                  -----------------------

Item 2(d)         Title of Class of Securities:

                  Common Stock Class D
                  --------------------

Item 2(e)         CUSIP Number

                  75040P405
                  ---------

Item 3.           This statement is filed pursuant to 13d-1(b) or 13d-2(b) and
                  the person filing is an investment adviser registered under
                  section 203 of the Investment Advisers Act of 1940.

Item 4.           Ownership.

                  (a)  Amount beneficially owned:

                       (See Page 2, No. 9)
                       ------------------



                                                                  Date: 12/31/02
                                                                        --------
                                                                     Page 4 of 5

             (b)  Percent of class:

                  (See Page 2, No. 11)
                  --------------------

             (c)  Number of shares as to which the person has:
                  (i)    Sole power to vote or to direct the vote
                         (See Page 2, No. 5)
                         -------------------

                  (ii)   Shared power to vote or to direct the vote
                         (See Page 2, No. 6)
                         -------------------

                  (ii)   Sole power to dispose or to direct the
                         disposition of  (See Page 2, No. 7)
                                         -------------------

                  (iii)  Shared power to dispose or to direct the
                         disposition of  (See Page 2, No. 8)
                                         -------------------

Item 5.      Ownership of Five Percent or Less of a Class.

                      If this statement is being filed to report the fact that
             as of the date hereof the reporting person has ceased to be
             the beneficial owner of more than five percent of the class of
             securities, check the following: [_]

Item 6.      Ownership of More than Five Percent on Behalf of Another Person.

                      All securities reported upon this Schedule are owned
             by investment advisory clients of Ariel Capital Management,
             Inc., no one of which to the knowledge of Ariel Capital
             Management, Inc. owns more than 5% of the class.

Item 7.      Identification and Classification of the Subsidiary Which Acquired
             the Security Being Reported on by the Parent Holding Company.

             Not Applicable
             --------------

Item 8.      Identification and Classification of Members of the Group.

             Not Applicable
             --------------

 Item 9.     Notice of Dissolution of a Group

             Not Applicable
             --------------



                                                                  Date: 12/31/02
                                                                        --------
                                                                     Page 5 of 5

Item 10.     Certification

                    By signing below I certify that, to the best of my knowledge
             and belief, the securities referred to above were acquired and are
             held in the ordinary course of business and were not acquired and
             are not held for the purpose of or with the effect of changing or
             influencing the control of the issuer of the securities and were
             not acquired and are not held in connection with or as a
             participant in any transaction having that purpose or effect.

                                    SIGNATURE

             The undersigned hereby agree that this statement is being filed on
     behalf of each of them and hereby certify, after reasonable inquiry and to
     the best of their knowledge and belief, that the information set forth in
     this statement is true, complete and correct.


                                          ARIEL CAPITAL MANGEMENT, INC.


                                          By:  /s/ John W. Rogers, Jr.
                                          ----------------------------------
                                                     John W. Rogers, Jr.

                                                     Chief Investment Officer,
                                                     Chief Executive Officer,
                                                     And Chairman