(4) the operator meets either of the following conditions:
(a) the operator maintains registers showing, for each day, the driver’s duty status and cycle followed, the hour at which each duty status begins and ends and the total number of hours spent in each status and, if applicable, the reasons for any excess hours or deferral of hours of rest in accordance with this Regulation; or
(b) the operator maintains registers showing the date and time when the day begins if different than midnight, the cycle followed by the driver, the hour at which the driver’s work shift begins and ends and the total number of service during the day provided that
i. the work shift begins and ends during the same day,
ii. the duration of the work shift is 13 hours or less, and
iii. the duration of the period of rest before and after the work shift is at least 11 consecutive hours.