October 3, 2018 L. Kevin Stout Chief Financial Officer Landstar System, Inc. 13410 Sutton Park Drive South Jacksonville, Florida 32224 Re: Landstar System, Inc. Form 10-K for the Fiscal Year Ended December 30, 2017 Form 10-Q for the Quarterly Period Ended June 30, 2018 Supplemental response dated September 7, 2018 File No. 000-21238 Dear Mr. Stout: We have reviewed your September 7, 2018 response to our comment letter and have the following comments. In some of our comments, we may ask you to provide us with information so we may better understand your disclosure. Please respond to these comments 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 comments apply to your facts and circumstances, please tell us why in your response. After reviewing your response to these comments, we may have additional comments. Unless we note otherwise, our references to prior comments are to comments in our August 8, 2018 letter. Form 10-Q for the Quarterly Period Ended June 30,2018 Note 12. Recent Accounting Pronouncements, page 16 1. We have reviewed your response to our prior comment 1, including the proposed revisions regarding the nature of your transportation services. Please also revise to include payment terms similar to that provided in your response. In closing, we remind you that the company and its management are responsible for the accuracy and adequacy of their disclosures, notwithstanding any review, comments, action or absence of action by the staff. L. Kevin Stout Landstar System, Inc. October 3, 2018 Page 2 You may contact Beverly Singleton at (202) 551-3328 or Jean Yu at (202) 551-3305 with any questions. FirstName LastNameL. Kevin Stout Sincerely, Comapany NameLandstar System, Inc. Division of Corporation Finance October 3, 2018 Page 2 Office of Transportation and Leisure FirstName LastName