Landstar System (LSTR) 10-K 2006 FY Annual report

EXHIBIT 32.1

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 Annual Report of Landstar System, Inc. (the “Company”) on Form 10-K for the period ending December 30, 2006, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Henry H. Gerkens, Chief Executive 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.

	/s/ Henry H. Gerkens
	Henry H. Gerkens
February 26, 2007	President and Chief Executive Officer

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