(a) Upon written request by the motor carrier, FMCSA will grant an exception from the requirements of remedial directives under this section to motor carriers that already had installed in all commercial motor vehicles, at the time of the compliance review immediately preceding the issuance of the notice of remedial directive, AOBRDs compliant with 49 CFR 395.15 of this chapter.
(b) The carrier will be permitted to continue using the previously installed devices if the carrier can satisfactorily demonstrate to FMCSA that the carrier and its employees understand how to use the AOBRDs and the information derived from them.
(c) The carrier must either use and maintain the AOBRDs currently in its CMVs or install new devices compliance with § 395.16 of this chapter.
(d) Although FMCSA may suspend enforcement for noncompliance with the remedial directive, the directive will remain in effect; and the hours-of-service compliance of any motor carrier so exempted, will be subject to ongoing FMCSA oversight.
(e) The exemption granted under this section shall not apply to CMVs manufactured on or after June 4, 2012.