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Roadside Safety Advisory Systems

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International Road Dynamics

Quixote Transportation Technologies

American Signal Company, Inc.

Astucia (UK), Ltd.

Delcan Corporation

Edwards and Kelcey

International Road Dynamics Inc. (IRD)

Jiangsu Zhaoxin Traffic System Engineering Co.,Ltd.

Kyocera Solar, Inc.

Leotek Electronics, Corp.

Safety Warning System, L.C.

System Innovations, Inc.

Transport Research Laboratory

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