49 CFR § 395.28 - Special driving categories; other driving statuses.
(a) Special driving categories -
(1) Motor carrier options. A motor carrier may configure an ELD to authorize a driver to indicate that the driver is operating a commercial motor vehicle under any of the following special driving categories:
(i) Authorized personal use; and
(ii) Yard moves.
(i) Must select on the ELD the applicable special driving category before the start of the status and deselect when the indicated status ends; and
(c) Other driving statuses. A driver operating a commercial motor vehicle under any exception under § 390.3(f) of this subchapter or § 395.1 who is not covered under paragraph (a) or (b) of this section must annotate the driver's ELD record to explain the applicable exemption.