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EXHIBIT 21

QUIXOTE CORPORATION & SUBSIDIARIES
SUBSIDIARIES OF THE COMPANY
as of June 30, 2003

QUIXOTE CORPORATION (PARENT)				Jurisdiction Under Which Organized
Quixote Transportation Safety, Inc.				Delaware
	TranSafe Corporation			Delaware
		Nu-Metrics, Inc.		Pennsylvania
		Highway Information Systems, Inc.		Delaware
			TIS, Inc.	North Carolina
	National Signal, Inc.			California
	Surface Systems, Inc.			Missouri
		Sensing Systems, Ltd.		United Kingdom
	U.S. Traffic Corporation			Delaware
	Energy Absorption Systems, Inc.			Delaware
		E-Tech Testing Services, Inc.		Delaware
		Spin-Cast Plastics, Inc.		Indiana
		Energy Absorption Systems (Europe), Inc.		Delaware
		Quixote Transportation Safety (Asia Pacific) Pty Limited		Australia
		Quixote Transportation Safety (Asia Pacific), Inc.		Delaware
		Quixote Transportation Safety (Europe), Inc.		Delaware
		Energy Absorption Systems (AL) LLC		Delaware
Quixote Research Corporation				Delaware
Quixote Foreign Sales Corporation				U.S. Virgin Islands

        Quixote Transportation Safety, Inc., Quixote Research Corporation and Quixote Foreign Sales Corporation are wholly-owned by Quixote Corporation.

        TranSafe Corporation, National Signal, Inc., Surface Systems, Inc., U.S. Traffic Corporation and Energy Absorption Systems, Inc. are wholly-owned by Quixote Transportation Safety, Inc.

        All subsidiaries listed under TranSafe Corporation, Highway Information Systems, Inc., Surface Systems, Inc. and Energy Absorption Systems, Inc. are wholly-owned by those corporations.

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EXHIBIT 21