Landstar System (LSTR) 10-Q 2017 Q2 Quarterly report

EXHIBIT 32.2

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Landstar System, Inc. (the “Company”) on Form 10-Q for the period ending July 1, 2017, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, L. Kevin Stout, Vice President and Chief Financial Officer of the Company, certify pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

(1) The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities and Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: August 4, 2017

/s/ L. Kevin Stout

L. Kevin Stout

Vice President and Chief Financial Officer