Exhibit 99.3

JOINT FILING AGREEMENT

     In accordance with Rule 13d-1(k) under the Securities Exchange Act of 1934, as amended, the persons named below agree to the joint filing on behalf of each of them of a Schedule 13D (and any amendment thereto filed by them) with respect to the shares of Common Stock, $.01 par value per share, of ABM Industries Incorporated.

Dated: January 12, 2006

THE SYDNEY J. ROSENBERG TRUSTS
By:	/s/ Martinn H. Mandles
	Name: Martinn H. Mandles
	Title: Co-Trustee
By:	/s/ S. Brad Rosenberg
	Name: S. Brad Rosenberg
	Title: Co-Trustee
By:	BANK OF AMERICA, N.A., as Co-Trustee
By:	/s/ Mark Goodson
	Name: Mark Goodson
	Title: Senior Vice President
THE THEODORE ROSENBERG TRUST
By:	/s/ Theodore Rosenberg
	Name: Theodore Rosenberg
	Title: Trustee
/s/ Martinn H. Mandles
Name: Martinn H. Mandles
/s/ S. Brad Rosenberg
Name: S. Brad Rosenberg
/s/ Theodore Rosenberg
Name: Theodore Rosenberg
Bank of America, N. A.
s/ Mark Goodson
Name: Mark Goodson
Title: Senior Vice President