Notice of Regulatory Guidance: Automatic On-Board Recording Devices

Summary: FMCSA issues regulatory guidance on two issues involving roadside inspection of commercial motor vehicles (CMVs) equipped with automatic on-board recording devices (AOBRDs) to assist drivers with hours-of-service (HOS) recordkeeping and compliance. All prior Agency interpretations and regulatory guidance, including memoranda and letters, may no longer be relied upon to the extent they are inconsistent with this guidance.