Current Report

     Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

                Date of Report (Date of earliest event reported):
                        March 18, 2002 (March 15, 2002)

                           Trimble Navigation Limited
             (Exact name of registrant as specified in its charter)

                 (State or other jurisdiction of incorporation)

                            (Commission File Number)

                             (IRS Employer I.D. No.)
                         645 N. Mary Ave. Sunnyvale, CA
                    (Address of principal executive offices)

                                   (Zip Code)
       Registrant's telephone number, including area code: (408) 481-8000

Item 5. Other Events and Regulation FD Disclosure.

The following  statement was released by Trimble Navigation Limited on March 15,
2002.  The  furnishing  of these  materials  is not  intended  to  constitute  a
representation  that such  furnishing  is required by  Regulation FD or that the
materials include material investor  information that is not otherwise  publicly
available.  In addition, the Registrant does not assume any obligation to update
such information in the future.

   Trimble and Caterpillar Sign Definitive Agreement to Form Joint Venture for
                          Machine Control Technologies

 Caterpillar Trimble Control Technologies LLC to Begin Operations in Early April

SUNNYVALE,  Calif., Mar. 15, 2002 - Trimble (Nasdaq:  TRMB) and Caterpillar Inc.
(NYSE:  CAT) today  announced  that they have reached a definitive  agreement to
form Caterpillar Trimble Control Technologies LLC. The joint venture, 50 percent
owned by Trimble  and 50 percent  owned by  Caterpillar,  will  develop the next
generation of advanced  electronic guidance and control products for earthmoving
machines  in the  construction,  mining and waste  industries.  Caterpillar  and
Trimble have successfully worked together for the past six years on a variety of
machine control technology initiatives.

Caterpillar  Trimble Control  Technologies LLC will be based in Dayton, Ohio and
is expected to begin  operations on April 1, 2002.  Mark  Nichols,  formerly the
division  vice  president  of Machine  Control  for  Trimble's  Engineering  and
Construction Division, will serve as general manager for the joint venture.

Under the terms of the agreement,  Caterpillar will contribute cash and selected
technology,  and Trimble will contribute select existing machine control product
technologies.  Additionally,  both  companies  have  licensed  patents and other
intellectual   property  from  their  portfolios  to  the  joint  venture.   The
proprietary  technologies  will serve as the  venture's  foundation  for product
development and commercialization  efforts. Trimble will be the source of Global
Positioning System (GPS), laser, wireless communications, computing and software
technologies.  Utilizing these  technologies,  the venture will develop on-board
systems that improve  productivity  and further  modernize the  construction and
mining markets.

Initially,  the venture will supply  products to Trimble and  Caterpillar.  Each
will market, distribute,  service and support the products using their company's
independent  distribution  channels.  Caterpillar will offer products as a fully
integrated, factory-installed option, while Trimble will continue to address the
aftermarket  with products for  earthmoving  machines  through its global dealer

"The  venture  marks a  significant  point in the  expansion of both the machine
control  market  and  in  the  successful   relationship   between  Trimble  and
Caterpillar,"  said Karl Ramstrom,  senior vice president and general manager of
Trimble's  Engineering  and  Construction  Division.  "Over the past five years,
there have been over 300,000  machines  sold in the United States alone that can
potentially benefit from the use of this technology.  By combining the strengths
of Trimble and Caterpillar, the venture will enable us to reach a larger part of
this  customer  base  and   accelerate   the  growth  and  acceptance  of  these
productivity enhancing systems in the construction market."

Mark Pflederer,  Cat  Electronics  Business Unit manager  commented,  "The joint
venture brings tremendous  synergistic benefits to both Caterpillar and Trimble.
It gives both organizations the expertise and platform to develop more long-term
strategies  to serve the evolving  on-machine  control  market than was possible
under our previous OEM-customer relationship.  As joint venture partners, we are
committed  to  increasing   commercial   penetration   of   on-machine   control
technologies by helping companies realize the cost savings, efficiency benefits,
and overall competitive advantage offered by these state-of-the-art systems."

"The market for machine  guidance and control  products has seen  relatively low
penetration  rates to date," said Mark Nichols,  general  manager of Caterpillar
Trimble Control Technologies LLC. "Over the past three years, customers who have
adopted  the  new  3D  machine  control  technology  have  realized  significant
benefits,  which include productivity  enhancements of up to 30 percent, reduced
rework,  and the  virtual  elimination  of  certain  steps  in the  construction
process.  By integrating  this technology into the design of its machines in the
factory,  Caterpillar  will offer its  customers  an  innovative  way to further
enhance their productivity in the field."

Caterpillar and Trimble will be exhibiting at CONEXPO-CON/AGG  2002, the largest
trade show in the Western Hemisphere for the construction,  aggregates and ready
mixed concrete industries,  in Las Vegas from March 19-23. The companies will be
highlighting  machine  control  technology  at both the Trimble and  Caterpillar
booths. For more information, visit

Financial Implications

The venture is not expected to have a significant  impact on Trimble's  earnings
in the near-term and is targeting profitability on a stand-alone basis beginning
in 2003.

Trimble will report net income (loss) before taxes from the venture under "Other
Non-operating Income and Expense" on its income statements.

About Cat Electronics and Caterpillar Inc.

Cat Electronics  provides leading edge technologies for the heavy-duty  industry
to enhance the value of  Caterpillar  machines and engines.  Based in Mossville,
Illinois,  the group is located in five  facilities,  including Europe and Asia.
Cat  Electronics  is comprised  of more than 800 highly  skilled  engineers  and
professionals  who  specialize  in the design,  test and marketing of electronic
systems, information systems, software, cabs and components.

Caterpillar Inc. is the world's leading  manufacturer of construction and mining
equipment,   diesel  and  natural  gas  engines  and  industrial  gas  turbines.
Headquartered in Peoria, Illinois, the company posted 2001 sales and revenues of
$20.45 billion.

For more information about Caterpillar, visit

About Trimble

Trimble is a leading innovator of Global Positioning System (GPS) technology. In
addition to providing  advanced GPS components,  Trimble augments GPS with other
positioning  technologies  as well as wireless  communications  and  software to
create complete  customer  solutions.  Trimble's  worldwide  presence and unique
capabilities position the Company for growth in emerging applications  including
surveying,  automobile navigation,  machine guidance,  asset tracking,  wireless
platforms,   and   telecommunications   infrastructure.   Founded  in  1978  and
headquartered  in Sunnyvale,  Calif.,  Trimble has more than 2,000  employees in
more than 20 countries worldwide.

For more information, visit Trimble's Web site at

                                      # # #

Certain  statements  made in this press release are forward  looking  statements
within the meaning of Section 27A of the  Securities Act of 1933 and Section 21E
of the Securities Exchange Act of 1934, and are made pursuant to the safe harbor
provisions of the Securities  Litigation  Reform Act of 1995. Actual results may
differ  from those set forth in this  press  release  due to  certain  risks and
uncertainties,  including the ability to develop new products and achieve market
acceptance  of product  offerings  from the joint  venture.  Among other things,
economic trends and additional  competitive issues may have an adverse effect on
the results and growth of the proposed joint venture.  These and other risks are
detailed from time to time in reports filed with the SEC,  including Trimble and
Caterpillar's respective quarterly reports on Form 10-Q and its annual report on
Form 10-K.


Pursuant  to the  requirements  of the  Securities  Exchange  Act of  1934,  the
Registrant  has duly  caused  this  report  to be  signed  on its  behalf by the
undersigned hereunto duly authorized.

                                                TRIMBLE NAVIGATION LIMITED
                                                a California corporation

    Dated: March 18, 2002                       By: /s/ Mary Ellen Genovese
                                                    Mary Ellen Genovese
                                                    Chief Financial Officer