ELDs & Hours of Service

Electronic logging devices — ELDs — are the federally mandated equipment commercial drivers use to record their hours of service. The rule, codified at 49 CFR Part 395 Subpart B, took full effect in December 2017 and reshaped not only how duty status is captured but how the broader telematics ecosystem inside commercial vehicles developed. This topic collects Recorder Logs coverage of the ELD rule itself, the hours-of-service framework it enforces, and the enforcement and compliance practice that has grown up around it.

Coverage here is regulatory and operational, not promotional. Where we discuss specific compliance procedures, we link to the primary FMCSA source. For the broader telematics context — what data sits alongside the ELD record and what happens to it after an incident — see the accident reconstruction and dashcams hubs.