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Interim final rule.

The National Highway Transportation Safety Administration (NHTSA) has recently approved a new breath tube alcohol screening device (ASD) which will qualify for use in DOT Agency regulated testing once it appears on NHTSA's conforming products list (CPL). This interim final rule (IFR) will provide procedures for use of the new device and remove procedures for a previously approved breath tube ASD which is no longer being manufactured.

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