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Definition National Highway Traffic Safety Administration

NHTSA is an agency within the U.S. Department of Transportation.  They are responsible for many things that are transportation-related.  One of their functions is to evaluate and approve breath alcohol testing instruments.

The U.S. DOT alcohol testing program requires the use of instruments on one of NHTSA's Conforming Products Lists (CPL).

Conforming Products List - evidential
Conforming Products List - screening
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