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American National Standards Institute
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American Welding Association
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The Federal Highway Research Institute
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European Certificate of Conformity
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Institute of Electrical and Electronics Engineers, Inc.
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International Municipal Signal Association
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International Organization for Standardization
Quality System According to EN ISO 9001:2000
Certificate Registration No. 04 100 20021575
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Manual on Uniform Traffic Control Devices
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National Electrical Manufacturers Association
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Directive on the Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment
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TÜV Certification of Quality Management
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Underwriters Laboratories C-UL US Listed
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