SEC Form 4

FORM 4		UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response: 0.5
	Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person* GERKENS HENRY H (Last) (First) (Middle) 13410 SUTTON PARK DRIVE SOUTH (Street) JACKSONVILLE FL 32224 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol LANDSTAR SYSTEM INC [ LSTR ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X Director 10% Owner X Officer (give title below) Other (specify below) President & CEO
	3. Date of Earliest Transaction (Month/Day/Year) 05/02/2007
	4. If Amendment, Date of Original Filed (Month/Day/Year)	6. Individual or Joint/Group Filing (Check Applicable Line) X Form filed by One Reporting Person Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	05/02/2007		M(1)		29,410	A	$19.025	129,410	D
Common Stock	05/03/2007		M(1)		117,616	A	$37.3088	247,026	D
Common Stock	05/03/2007		S(1)		400	D	$50.03	246,626	D
Common Stock	05/03/2007		S(1)		102,324	D	$50.06	144,302	D
Common Stock	05/03/2007		S(1)		7,900	D	$50.07	136,402	D
Common Stock	05/03/2007		S(1)		9,824	D	$50.08	126,578	D
Common Stock	05/03/2007		S(1)		4,436	D	$50.09	122,142	D
Common Stock	05/03/2007		S(1)		2,700	D	$50.1	119,442	D
Common Stock	05/03/2007		S(1)		2,600	D	$50.11	116,842	D
Common Stock	05/03/2007		S(1)		600	D	$50.12	116,242	D
Common Stock	05/03/2007		S(1)		1,442	D	$50.13	114,800	D
Common Stock	05/03/2007		S(1)		100	D	$50.14	114,700	D
Common Stock	05/03/2007		S(1)		649	D	$50.15	114,051	D
Common Stock	05/03/2007		S(1)		200	D	$50.16	113,851	D
Common Stock	05/03/2007		S(1)		139	D	$50.17	113,712	D
Common Stock	05/03/2007		S(1)		200	D	$50.19	113,512	D
Common Stock	05/03/2007		S(1)		100	D	$50.2	113,412	D
Common Stock	05/03/2007		S(1)		100	D	$50.21	113,312	D
Common Stock	05/03/2007		S(1)		100	D	$50.22	113,212	D
Common Stock	05/03/2007		S(1)		100	D	$50.23	113,112	D
Common Stock	05/03/2007		S(1)		200	D	$50.27	112,912	D
Common Stock	05/03/2007		S(1)		112	D	$50.29	112,800	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Stock Options (Right to buy)	$19.025	05/02/2007		M(1)			29,410	01/02/2007	01/02/2014	Common Stock	29,410	$0	5,256	D
Stock Options (Right to buy)	$37.3088	05/03/2007		M(1)			117,616	(2)	01/03/2015	Common Stock	117,616	$0	82,384	D

Explanation of Responses:

1. The stock option exercises and sales of common stock reported on this Form 4 were effected pursuant to a rule 10b5-1 trading plan adopted by the reporting person.

2. Options became exercisable as to 66,667 shares on 1/3/2006 and 50,949 shares on 1/3/2007.

	L. Kevin Stout, Attorney-in-fact	05/04/2007
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

Power of Attorney

Know all by these presents, that the undersigned hereby constitutes and
appoints each of James B. Gattoni, Michael K. Kneller and L. Kevin Stout,
signing singly, the undersigned's true and lawful attorney-in-fact to:

(1) prepare, execute in the undersigned's name and on the undersigned's behalf,
and submit to the U.S. Securities and Exchange Commission (the "SEC") a Form
ID, including amendments thereto, and any other documents necessary or
appropriate to obtain codes and passwords enabling the undersigned to make
electronic filings with the SEC of reports required by Section 16(a) of the
Securities Exchange Act of 1934 or any rule or regulation of the SEC;

(2) execute for and on behalf of the undersigned, in the undersigned's capacity
as an officer and/or director of Landstar System, Inc. (the "Company"), Forms
3, 4, and 5 in accordance with Section 16(a) of the Securities Act of 1934 and
the rules thereunder, and any other forms or reports the undersigned may be
required to file in connection with the undersigned's ownership, acquisition,
or disposition of securities of the company;

(3) do and perform any and all acts for and on behalf of the undersigned which
may be necessary or desirable to complete and execute any such Form 3, 4, or 5,
or other form of report, and timely file such form or report with the SEC and
any stock exchange or similar authority; and

(4) take any other action of any type whatsoever in connection with the
foregoing which, in the opinion of such attorney-in-fact, may be of benefit to,
in the best interest of, or legally required by, the undersigned, it being
understood that the documents executed by such attorney-in-fact on behalf of
the undersigned pursuant to this Power of Attorney shall be in such form and
shall contain such terms and conditions as such attorney-in-fact may approve
in such attorney-in-fact's discretion.

The undersigned hereby grants to each such attorney-in-fact full power and
authority to do and perform any and every act and thing whatsoever requisite,
necessary, or proper to be done in the exercise of any of the rights and powers
herein granted, as fully to all intents and purposes as the undersigned might
or could do if personally present, with full power of substitution or
revocation, hereby ratifying and confirming all that such attorney-in-fact,
or such attorney-in-fact's substitutes, shall lawfully do or cause to be done
by virtue of this power of attorney and the rights and powers herein granted.
The undersigned acknowledges that the foregoing attorneys-in-fact, in serving
in such capacity at the request of the undersigned, are not assuming, nor is
the Company assuming, any of the undersigned's responsibilities to comply with
Section 16 of the Securities Exchange Act of 1934.

This Power of Attorney shall remain in full force and effect until the
undersigned is no longer required to file Forms 3, 4, and 5 with respect to
the undersigned's holdings of and transactions in securities issued by the
Company, unless earlier revoked by the undersigned in a signed writing
delivered to the foregoing attorneys-in-fact.

IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be
executed as this 26th day of February, 2007.

/s/ Henry H. Gerkens
Signature

Henry H. Gerkens
Print Name