EXHIBIT 10.31

STATE OF NORTH CAROLINA

COUNTY OF DURHAM                                          FOURTH LEASE AMENDMENT


      THIS FOURTH LEASE AMENDMENT (the "Amendment") is entered into and
effective this 8th day of September 2003, by and between PROPERTY RESERVE,
INC, a Utah corporation (hereinafter "Landlord"), and DIGITAL RECORDERS, INC., a
North Carolina corporation (hereinafter, "Tenant").

                                    RECITALS:

      A.    The Prudential Savings Bank, F.S.B., as Trustee ("Prudential") and
Tenant entered into a Lease Agreement dated December 18, 1998, as amended by
First Lease Amendment dated December 11, 2002, and Second Lease Amendment dated
June 19, 2003, and Third Lease Amendment dated August 21, 2003, between
Landlord, successor in interest to Prudential's interest as landlord (as
amended, the "Lease"), for approximately thirty-one thousand one hundred
seventy-two (31,172) rentable square feet of space (the "Existing Premises")
being twenty-six thousand four hundred eighty-four (26,484) rentable square feet
located in Suite 100 at the east end and four thousand six hundred eighty-eight
rentable square feet (4,688 r.s.f.) at the west end of that certain building
known as 4018 Patriot Drive, Durham, Durham County North Carolina 27709 (the
"Building"), being part of that development known as One Park Center.

      B.    Landlord and Tenant now desire to modify and amend the Lease
pursuant to the terms and conditions contained herein.

                                   AGREEMENT:

      NOW, THEREFORE, for valuable consideration and ONE AND NO/100 DOLLARS
($1.00) paid by Tenant to Landlord, Landlord and Tenant agree that the Lease is
modified and amended as follows:

      1.    Commencing on the Additional Space Commencement Date, as defined
            herein, the Premises shall be expanded to include approximately four
            thousand four hundred sixteen rentable square feet (4,416 r.s.f)
            more or less, (the "Additional Space") adjacent to the portion
            occupied by Tenant on the east end of the Building, as shown on
            Exhibit A, attached hereto and incorporated herein by reference. As
            of the Additional Space Commencement Date, the Premises shall
            contain a total of thirty-five thousand five hundred eighty-eight
            rentable square feet (35,588 r.s.f.).

      2.    As of the Additional Space Commencement Date:



            a.    Tenant's Pro Rata Share for operating expense pass throughs
                  and other purposes shall be recalculated based on the revised
                  square footage of the Premises; and

            b.    The Base Year Amount for determining operating expense pass
                  throughs attributable for the Additional Space incurred after
                  the Additional Space Commencement Date shall be the operating
                  expenses paid or incurred by Landlord for calendar year 2003.
                  The Base Year(s) for the Existing Space shall remain
                  unchanged; and

            c.    In addition to the Base Rent on the Existing Premises, Tenant
                  shall pay Base Rent on the Additional Space as follows:

 
 
                                                           Installment of Monthly Base
                               Month                                  Rent
                               -----                                  ----
                                                        
                  September___, 2003 * - April 30, 2004             $2,189.60
                      May 1, 1004 - April 30, 2005                  $2,255.84
                      May 1, 2006 - April 30, 2006                  $2,322.08
                      May 1, 2006 - April 30, 2007                  $2,392.00
                      May 1, 2007 - April 30, 2008                  $2,465,60
                      May 1, 2008 - April 30, 2009                  $2,539.20


 * Monthly Base Rent for September 2003 will be prorated.

            d.    Any other sums calculated based on rentable square footage of
                  the Premises shall be recalculated based on 35,588 rentable
                  square feet. The provisions of Paragraph 3(h) of the Lease
                  limiting annual increases in Controllable Expenses shall not
                  limit increases arising from the increase in the rentable
                  square footage of the Premises.

            e.    Except as specifically modified hereby, all references to
                  "rent," "Base Rent," "operating expenses," and "additional
                  rent" shall be interpreted to apply as and to reflect the
                  revised square footage of the Premises.

      3.    The term of the Lease shall not be affected by this Fourth Lease
            Amendment; the Lease shall expire as of April 30, 2009, unless
            earlier terminated as set forth in the Lease.

      4.    The "Additional Space Commencement Date" shall mean the earlier of
            (i) September _, 2003 or (ii) Tenant's occupancy of any or all of
            the Additional Space.

      5.    Tenant has examined land inspected the Additional Space and accepts
            the Additional Space in all respects "AS IS" and "WHERE IS" subject
            to completion of the leasehold improvements as set forth on Exhibit
            B."



      6.    Tenant understands and agrees that the services and utilities,
            including but not limited to electrical, gas, water and sewer which
            are provided to the 4,416 r.s,f. added by this Fourth Lease
            Amendment are separately metered. Tenant shall contract directly
            with the service provider for such services. Certain services or
            utilities on the meter may actually include a larger area already
            occupied by Tenant (for example under the First Lease Amendment or
            Second Lease Amendment).

      7.    Landlord acknowledges that it currently holds $15,422.38 as a
            Security Deposit pursuant to Paragraph 3(b) of the Lease. No
            additional Security Deposit is being required as part of this Fourth
            Lease Amendment.

      8.    Tenant acknowledges that its obligation to pay rent pursuant to the
            Fourth Lease Amendment shall commence on the Additional Space
            Commencement Date notwithstanding that the Landlord's Work set out
            on Exhibit B has not been done.

      9.    Tenant acknowledges that any guaranty, letter of credit, or other
            form of security which was intended to be applicable to the Existing
            Premises or Lease pursuant to Paragraph 3 of EXHIBIT D to the Lease
            shall also be applicable to the Additional Space and the Lease as
            amended by this Fourth Lease Amendment. Tenant agrees to deliver
            such documents or other items, signed by all appropriate parties as
            may be requested by Landlord to evidence this agreement.

      10.   Tenant represents and warrants to Landlord that Tenant has not
            entered into any agreements, nor will Tenant enter into any
            agreement in the future whereby Landlord would be obligated to pay
            any broker's commission or finder's fee in connection with Tenant's
            execution of this Fourth Lease Amendment. Tenant agrees to indemnify
            Landlord against, and to hold Landlord harmless from, all
            liabilities arising from any such claim.

      11.   Capitalized terms not defined herein shall have the same meaning as
            set forth in the Lease.

      12.   Except as specifically modified hereby, all the terms and provisions
            of the Lease shall remain in full force and effect and are hereby
            affirmed and ratified.

                                        3

     IN WITNESS WHEREOF, Landlord and Tenant have executed this Fourth Lease
Amendment in triplicate originals, all as of the day and year first above
written.

                                  LANDLORD:

                                  PROPERTY RESERVE, INC.,
                                  a Utah corporation

                                  By:____________________________
                                  Name:__________________________
                                  Title:_________________________

                                  Date:__________________________

                                  TENANT:

                                  DIGITAL RECORDERS, INC.,
                                  a North Carolina corporation

                                  By:____________________________
                                  Name:__________________________
                                  Title:_________________________

                                  Date:__________________________



                              SCHEDULE OF EXHIBITS

Exhibit A       Diagram showing Additional Space in relation to its location
                in the Building. Preferable to cross hatch Additional Space.

Exhibit B       Leasehold Improvements Exhibit


                                   EXHIBIT A

                                  [FLOOR PLAN]


                                    EXHIBIT B

                             Leasehold Improvements

Landlord shall, at Landlord's cost, perform the following work ("Landlord's
Work"):

(i)install a "1 hour" demising wall to separate the Premises from the adjacent
vacant space.

(ii) install a single door within the Premises to connect the portion of the
Premises originally leased to the space added by the First Lease Amendment,
the Second Lease Amendment and the Third Lease Amendment.

(iii) install 2,000 square feet of vinyl tile as agreed between Landlord and
Tenant.

Tenant acknowledges that the improvements (i) may be made in the Additional
Space and the Existing Premises on the east side of the Building as agreed by
Landlord and Tenant and (ii) will not be done as of the Additional Space
Commencement Date. Tenant grants, Landlord, its agents, employees and
contractors access to the Additional Space and the Existing Premises to perform
such work and shall not delay or hinder the performance of such work. Landlord's
work shall not constitute a nuisance or constructive eviction nor give Tenant
any right to abate or withhold rent. Landlord shall perform the work in a good
and workmanlike manner.