ELD Guide
ELD device requirements under 49 CFR Part 395: what makes a device FMCSA-compliant, where to find the registered device list at eld.fmcsa.dot.gov, and why only the listed identifier controls.
Carrier ELD obligations: FMCSA-registered device requirement, written malfunction response policy, 8-day repair window under 49 CFR 395.34, driver training, and 6-month record retention under 49 CFR 395.8(k).
Motor carrier ELD responsibilities include ensuring all vehicles have FMCSA-registered ELDs, training drivers on device use and malfunction procedures, maintaining a written malfunction response policy, notifying FMCSA if a device cannot be repaired within the regulatory window, and retaining ELD records for the required period.
ELD and HOS topics should be read with the related driver, carrier, and rule-specific pages. ELD Guide, Hours of Service, ELD Malfunction.
Use for ELD overview and official registered-device reference prompts.
Use for ELD malfunction action checklists and related guide pages.
Use as the primary regulatory reference for HOS and ELD pages.
ELD device requirements under 49 CFR Part 395: what makes a device FMCSA-compliant, where to find the registered device list at eld.fmcsa.dot.gov, and why only the listed identifier controls.
FMCSA Hours of Service regulations for property-carrying and passenger-carrying CMV operations: driving limits, on-duty windows, off-duty requirements, and weekly on-duty caps.
ELD malfunction response steps for drivers and carriers, including paper logs, notification timing, repair windows, and records.
Carriers must retain ELD records for each driver, including daily logs, supporting documents (fuel receipts, bills of lading, inspection reports), malfunction records, and driver certification documentation, for the period required under eCFR Part 395 — generally six months. Verify the exact retention period and format requirements with FMCSA.
At minimum: the driver's 24-hour notification obligation, the carrier's 8-day repair or replacement window under 49 CFR 395.34, the paper log procedure and supply requirement, and the process for requesting an FMCSA extension if repair cannot be completed in time. FMCSA may review the policy during compliance audits.
Investigate the specific cause first — some diagnostics point to driver behavior (frequent power disconnects, unassigned driving) while others indicate device technical issues. Address behavioral patterns through training or policy; address device failures through manufacturer support or replacement. Persistent unresolved diagnostics increase audit exposure for both the driver and the carrier.