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                            August 10, 2021

       James Todd
       Vice President & Corporate Controller
       Landstar System Inc.
       13410 Sutton Park Drive South
       Jacksonville, FL 32224

                                                        Re: Landstar System
Inc.
                                                            Form 10-K for the
Fiscal Year ended December 26, 2020
                                                            Filed February 23,
2021
                                                            File No. 000-21238

       Dear Mr. Todd:

               We have reviewed your May 21, 2021 response to our comment
letter and have the
       following comment. In our comment, we may ask you to provide us with
information so we may
       better understand your disclosure.

              Please respond to this comment within ten business days by
providing the requested
       information or advise us as soon as possible when you will respond. If
you do not believe our
       comment applies to your facts and circumstances, please tell us why in
your response.

              After reviewing your response to this comment, we may have
additional
       comments. Unless we note otherwise, our references to prior comments are
to comments in our
       April 14, 2021 letter.

       Form 10-K for the Fiscal Year ended December 26, 2020

       Management's Discussion and Analysis of Financial Condition and Results
of Operations
       Changes in Financial Condition and Results of Operations, page 22

   1.                                                   We have read your
response to prior comment one and continue to believe, as advised in
                                                        our April 14, 2021
comment letter and subsequently during our July 27, 2021 conference
                                                        call, that you will
need to revise the manner by which you identify and present non-GAAP
                                                        measures and metrics
based on non-GAAP measures in your various communications
                                                        with investors, as
prescribed by Item 10(e) of Regulation S-K and Regulation G.

                                                        The FASB Master
Glossary, as you have observed, defines Gross Margin, which we
                                                        regard as synonymous
with Gross Profit, and while the FASB indicates it does not include
                                                        all operating expenses,
we do not believe this accommodates the latitude you have applied
 James Todd
Landstar System Inc.
August 10, 2021
Page 2
         in calculating the margin metrics referenced and utilized in your
disclosures, when
         considering other provisions in GAAP and SEC reporting requirements.

         Rule 5-03 of Regulation S-X requires the separate presentation of
costs and expenses
         applicable to revenues from services (as it does for sales of tangible
products when
         material), which is a measure that is differentiated from other
operating costs and
         expenses not applicable to revenues, selling, general and
administrative expenses, and
         various other items. We have referred you to FASB ASC 705-10-25-3 and
4A, and the
         corresponding guidance in FASB ASC 330-10-30-1 through 8, and FASB ASC
340-40-
         25-7, which may be utilized by analogy in determining the types of
costs that should be
         allocated to cost and expenses applicable to revenues from services.

         As indicated in prior comment one and during our conference call, we
do not believe that
         your costs of purchased transportation and commissions to agents
represent all costs and
         expenses that are applicable to revenues from services in accordance
with GAAP, and
         since your resulting measure of    gross profit    would thereby meet
the definition of a non-
         GAAP measure in Item 10(e)(2)(i) of Regulation S-K, the margin metrics
that you
         disclose based on this measure would not be scoped-out of the non-GAAP
disclosure
         guidance based on Item 10(e)(4)(ii), as suggested in your prior
response.

         Please submit the revisions that you propose to address the concerns
outlined above and in
         prior comment one, as necessary to conform to the requirements of Item
10(e) of
         Regulation S-K and Regulation G. Please ensure that you include
comparable tabulations
         of metrics as reported on page 27 of your annual report and pages 22
and 23 of your two
         most recent interim reports, using GAAP measures of gross profit, and
a reconciliation
         between gross profit in accordance with GAAP and your relabeled
non-GAAP measure,
         along with appropriate narratives. We reissue prior comment one.
        You may contact Mark Wojciechowski, Staff Accountant, at (202) 551-3759
or Karl
Hiller, Branch Chief, at (202) 551-3686 if you have questions regarding
comments on the
financial statements and related matters.



FirstName LastNameJames Todd                                  Sincerely,
Comapany NameLandstar System Inc.
                                                              Division of
Corporation Finance
August 10, 2021 Page 2                                        Office of Energy
& Transportation
FirstName LastName