Trucking · Regulation

Electronic logging devices.
The federal mandate.

Section 32301(b) of MAP-21 directed the FMCSA to replace paper records of duty status with electronic logging devices. The agency's December 16, 2015 final rule codified the mandate at 49 CFR Part 395 Subpart B; most drivers were required to comply by December 18, 2017 and grandfathered AOBRDs sunset on December 16, 2019. Here is what the rule requires, how the FMCSA's self-certification registry works, what's happening with the active certification overhaul, and the vendor landscape that grew up around the rule.

Sibling pages: /trucking/hours-of-service/ for the substantive driving-time rules (Subpart A); /trucking/ for the section index.

The mandate Scope & exceptions Technical requirements Registry & certification Revocations Personal conveyance & yard moves Enforcement Vendor landscape Historical context Sources

1 · The mandate

MAP-21 § 32301(b) and the 2015 final rule

The ELD mandate originates in Section 32301(b) of the Moving Ahead for Progress in the 21st Century Act (Public Law 112-141, July 6, 2012), which directed the Secretary of Transportation to require commercial motor vehicles involved in interstate commerce, when operated by a driver subject to the hours-of-service and record-of-duty-status requirements, to be equipped with an electronic logging device. The FMCSA issued its implementing rule, titled “Electronic Logging Devices and Hours of Service Supporting Documents”, in the Federal Register on December 16, 2015 (80 Fed. Reg. 78292, RIN 2126-AB20).

The rule is codified at 14 CFR Part 395 Subpart B (the recording-and-enforcement half of Part 395; the substantive HOS rules live on Subpart A — see the sibling page at /trucking/hours-of-service/). Compliance was phased in across two milestones:

  • December 18, 2017 — primary compliance. Drivers required to keep records of duty status under § 395.8(a) had to begin using either an ELD or a grandfathered Automatic On-Board Recording Device (AOBRD).
  • December 16, 2019 — AOBRD sunset. Carriers that had installed AOBRDs under the prior § 395.15 framework (since repealed) before December 18, 2017 had to fully transition to ELDs.

The mandate has been substantively stable since the 2019 AOBRD sunset, but the regulatory surround is moving. The agency has periodically updated regulatory guidance, rescinded the physical-manual-in-CMV requirement in 2025, run 2026 pilot programs that could feed into Subpart A revisions, and announced a complete overhaul of the device certification process. The vendor landscape has also consolidated — the post-mandate gold-rush of 2016-2018 gave way to a smaller set of survivors that now serve the market through M&A and IPO activity. Both the regulatory and vendor-landscape changes are covered in the sections below.

For a quick orientation: the recording layer (this page) and the substantive driving-time layer (Subpart A) are the two halves of Part 395 that every roadside inspection and every motor-carrier compliance audit touches together. The aviation regulatory-explainer page at /aviation/pilot-mentoring/ covers a comparable shape on the airline side — statute, final rule, codified CFR location, advisory circulars, and a vendor landscape.

2 · Scope and exceptions

Who has to use an ELD

ELDs are required for drivers currently required to keep records of duty status (RODS) under § 395.8(a). In plain terms, that covers most interstate property-carrying CMV drivers and most interstate passenger-carrying CMV drivers. The exceptions are narrow but real, and they are the part of the rule that gets the most attention at roadside inspection.

Four categories of driver are excepted from the ELD requirement under § 395.8(a)(1)(iii):

  • Short-haul drivers who qualify for the 150 air-mile / 14-hour-on-duty exception under § 395.1(e)(1). See the short-haul section on /trucking/hours-of-service/ for the underlying exception. The exception covers the recordkeeping; it does not waive the substantive HOS limits.
  • Drivers who keep paper RODS on no more than 8 days in any 30-day rolling window. The rule is designed for occasional long-haul drivers who normally operate short-haul; if they exceed 8 days in any rolling 30, they fall back under the ELD requirement.
  • Drive-away / tow-away operators when the driven vehicle is the commodity being delivered.
  • Drivers of CMVs with engines manufactured before model year 2000. The exception is based on the model year of the engine, not the chassis — a 1995-engine swap into a 2010 chassis qualifies.

The pre-2000-engines question

The September 2022 ELD Revisions ANPRM (87 FR 56921) specifically asked whether the pre-2000-engines exception should be narrowed for vehicles whose engines have ECMs capable of supporting an ELD. The agency has not finalized a revision; the exception remains in place as written. If a future final rule changes the scope, this section gets updated.

3 · Technical requirements

What an ELD must do

The technical specifications are documented in Appendix A to Subpart B and run several dozen pages of engineering-grade detail. The load-bearing requirements, summarized:

Engine connection and automatic driving-time recording

The device must connect to the vehicle's engine control module (or, for pre-ECM vehicles, an equivalent means) and automatically record driving time whenever the vehicle is in motion above the recorded-driving threshold (typically about 5 mph). The driver cannot manually un-record driving time; only carrier-side edits with annotation are permitted.

Driver authentication and status

The driver authenticates to the device at the start of the duty period and selects duty status (off-duty, sleeper berth, on-duty-not-driving, driving) and the special driving categories (personal conveyance, yard moves) where applicable.

Data-transfer mechanism for roadside inspection

The device must support either telematic transfer (web-services upload to the FMCSA's eRODS system over the inspection officer's connection) or local transfer (USB 2.0 or Bluetooth to the officer's device). The Appendix A specification defines the file format (CSV with the agency-specified header lines and the per-record event schema).

Six-month retention (carrier-side)

The motor carrier must retain ELD records for six months from the date each record was created, plus the back-up copy that the device's data-transfer file represents. The driver's own device-side records must be available for the past 7 days plus the current duty period.

Malfunction reporting and recordkeeping during malfunctions

Under § 395.34, the device must self-monitor for the specified malfunction conditions (power, engine synchronization, positioning, data recording, data transfer, timing) and alert the driver. During a malfunction, the driver reverts to paper RODS; the carrier has 8 days to repair or replace the device.

Supporting-documents discipline

Under § 395.11, the carrier must collect and retain supporting documents (bills of lading, fuel receipts, weigh-station tickets, etc.) for each driver's duty period to corroborate the ELD record. The supporting-documents requirement is the cross-check that the ELD data is consistent with the operational reality of the run.

The 2025 operator's-manual rescission is worth naming here: until May 30, 2025, the rule required a physical copy of the device's operator's manual to be present in the CMV. The agency rescinded that requirement, citing the ubiquity of in-cab connectivity and the cost of maintaining a paper manual that virtually no driver consulted. The technical recordkeeping requirements above are unchanged; only the physical-manual mandate was removed.

4 · Registry and certification

Self-certification and the registered-devices list

The FMCSA's certification model is self-certification. Device vendors register their products on the agency's registered-devices list at eld.fmcsa.dot.gov/list/GetListOfELDs and declare under penalty of perjury that their device meets the technical specifications in Appendix A. The agency does not pre-approve devices — the burden of compliance sits on the vendor, and the agency's enforcement comes via post-registration revocation when devices are found non-compliant in operation.

Motor carriers are responsible for verifying that the device they choose is on the registered list and not on the revoked list. The agency has emphasized this carrier-side responsibility repeatedly in regulatory guidance; "we relied on the vendor's certification" is not a defense if the device turns out to be non-compliant.

The 2025-2026 certification overhaul

FMCSA announced in 2025-2026 that it is replacing the self-certification model with a multi-step vetting workflow. The new process has four announced categories:

  • Approved — the device passed initial review and fraud detection.
  • Information requested — the agency requires additional documentation before classification.
  • Further review — the device is provisionally listed pending deeper technical review.
  • Denied — the device failed review and is not listed.

The overhaul is in implementation; the agency's News and Events page is the primary source for status updates as it rolls out. If and when the new workflow publishes as a NPRM or final rule, this section gets updated to reflect the rulemaking stage.

Two parallel surfaces on the agency's site are worth bookmarking: eld.fmcsa.dot.gov is the agency's hub for the rule (FAQs, fact sheets, implementation timeline, compliance-officer training material); the registered-devices list is the authoritative surface for whether a given device is currently listed (and on what terms, once the new four-category classification is live).

5 · Revocations

How non-compliant devices come off the list

When the FMCSA determines that a registered device does not meet the technical specifications — commonly through inspection-officer reports, the agency's own spot-checks, or vendor self-disclosure — it moves the device from the registered list to the revoked list and publishes the revocation on its News and Events page. The agency has been more active on revocations since 2022 than in the years immediately following the mandate; the 2025-2026 period has seen the agency remove more than two dozen devices from the registered list per contemporaneous trade-press coverage.

The replacement-deadline cadence

A revocation typically comes with a 30-to-60-day replacement deadline. During that window, carriers using the affected device must transition to a compliant device or revert to paper RODS as the device's malfunction procedure under § 395.34 directs. After the deadline, drivers continuing to operate with the revoked device are subject to the same enforcement consequences as driving without an ELD — an out-of-service violation at roadside and a carrier-side scoring hit under the Safety Measurement System.

The page does not enumerate specific revoked devices — the list rotates often enough that a static enumeration would drift within weeks. The registered-devices list and the News and Events page together are the authoritative sources.

The recurring monthly refresh of this page picks up newly revoked devices and reflects them in the historical-context section's discussion of vendor-landscape pressure. Carrier compliance officers and owner-operators monitoring their own device should treat the FMCSA News and Events feed as the canonical source.

6 · Personal conveyance & yard moves

The two special driving categories

The ELD rule defines two special driving categories that the device records distinctly from regular driving. Both are long-standing sources of enforcement disputes because they sit at the boundary between on-duty driving (which consumes HOS clocks) and other statuses (which do not, or do so differently).

Personal conveyance

Personal conveyance is off-duty operation of the CMV authorized by the motor carrier at its discretion. When the driver selects personal conveyance on the device, the ELD records the time but does not count it against the 11-hour driving limit or the 14-hour duty window. The device records the location with reduced precision — a 10-mile-radius approximation rather than the precise GPS fix — to preserve driver privacy during off-duty time.

The FMCSA's personal conveyance regulatory guidance enumerates the permitted and prohibited uses. Permitted includes off-duty travel from a shipper/receiver to a nearby restaurant or place of rest, off-duty travel home after the duty period ends, travel between the driver's residence and the trip's first or last on-duty stop. Prohibited includes off-duty travel to enhance the operational readiness of the carrier (positioning the truck closer to the next pick-up) and any movement that benefits the carrier rather than the driver. The boundary between the two is regularly contested at roadside inspection.

The interaction with the 14-hour window matters: a driver who has consumed the 14-hour window cannot continue operating the CMV as personal conveyance to a destination beyond the rest period's reasonable scope — the agency has issued specific guidance that such use circumvents the window's purpose. The cross-link to the duty-window section covers the underlying 14-hour rule.

Yard moves

A yard move is on-duty-not-driving movement of the CMV within a yard or terminal at low speeds — typically below 20 mph — for the purpose of positioning the vehicle for loading, unloading, fueling, inspection, or parking. When the driver selects yard moves on the device, the ELD records the time as on-duty-not-driving rather than driving. The 11-hour driving limit does not advance; the 14-hour duty window does.

The FMCSA's yard-moves regulatory guidance specifies the geofence-or-attestation framing: the carrier may either configure a geofenced yard area that the device recognizes, or rely on driver attestation that the movement was inside the yard. Either way, the yard-moves status terminates when the driver exits the yard or exceeds the speed threshold, at which point the device automatically reverts to driving status.

7 · Enforcement

Roadside, audit, and the supporting-documents cross-check

ELD enforcement runs in three places. Roadside inspection is the most visible: the officer requests the device's data-transfer file (telematic or local), opens the eRODS viewer, and checks the past 7-plus-today duty-period record against the substantive HOS rules. Carrier-side compliance review at FMCSA's request runs deeper: the agency audits 6 months of ELD records cross-referenced against the carrier's supporting-documents file (bills of lading, fuel receipts, dispatch logs). And driver-side document review after an incident allows reconstruction of the driver's pre-incident duty cycle from the device's record.

Out-of-service criteria

  • Driver has no compliant ELD and no valid exception.
  • Device is in malfunction status and the driver is not maintaining paper RODS for the duration of the malfunction.
  • Falsified records (driver edits without annotation, mismatched supporting documents, fabricated duty status).
  • Driver continues to drive after exceeding an HOS limit (out-of-service applies until enough rest has been accumulated to bring the driver back into compliance).

The driver-protection counterpart to the carrier-side enforcement framework is 49 CFR § 390.6, the prohibition on motor-carrier coercion. A carrier that threatens a driver with adverse employment consequences for refusing to violate HOS rules is in violation of the coercion rule and faces direct civil penalties. The rule complements the ELD record — the device produces the evidence of when an HOS violation occurred; the coercion rule provides the driver-side cause of action when a carrier pressured the violation.

Supporting-documents discipline under § 395.11 is the deepest enforcement layer: the carrier must retain the documents and the ELD record for 6 months, and the agency reconstructs operational reality from the cross-check. Most ELD-related enforcement actions trace back to a supporting-documents discrepancy that the ELD record alone would not have surfaced.

8 · Vendor landscape

How the market segments

The ELD vendor market consolidated substantially after the 2017 phase-in. Dozens of vendors competed for the market the mandate created; a smaller set of survivors now dominates the registered list. I describe the segments below factually with one-line identifications per vendor — not a ranking, not a buyer's guide, not a comparison table. The agency does not endorse vendors and neither does this page.

Enterprise tier

Telematics-heavy, integration-friendly platforms aimed at large fleets:

  • Samsara (NYSE: IOT) — the post-2017 enterprise leader; went public December 2021.
  • Geotab — international, integration-led; anchors many cross-border North American fleet deployments.
  • Omnitracs (now part of Solera) — the long-running Qualcomm telematics spin-out, combined with SmartDrive and Spireon into the Omnitracs One platform after Solera's June 2021 acquisition.
  • Trimble — long-haul transportation segment of the larger geospatial-and-logistics platform.
  • Verizon Connect — the Telogis-and-Fleetmatics rollup under Verizon Business.

Mid-market

  • Motive (formerly KeepTruckin; rebranded April 2022) — the post-rebrand mid-market challenger; filed an S-1 in December 2025 for a 2026 IPO under expected ticker MTVE.

Owner-operator and small-fleet

Specialized

  • Lytx — video-safety-led; ELD is bundled with the driver-camera-and-event-recording platform.
  • J. J. Keller Encompass — compliance-led; ELD is bundled with the long-running J. J. Keller compliance-services portfolio.
  • Teletrac Navman and Zonar — both serve specialized segments with mid-fleet integrations.

Load-bearing market events

  • Samsara IPO — December 2021. The first pure-play ELD-and-telematics vendor to go public at scale; the IPO validated the post-mandate enterprise market.
  • KeepTruckin rebrand to Motive — April 2022. Repositioned the company as a broader fleet-management platform.
  • Solera acquires Omnitracs — June 2021; combined with SmartDrive and Spireon into Omnitracs One.
  • Motive S-1 filing — December 2025. The expected 2026 IPO under ticker MTVE would make Motive the second pure-play ELD vendor to go public.

9 · Historical context

From paper RODS to the post-mandate shakeout

The pre-ELD baseline was paper records of duty status. A driver kept a graph-grid logbook, manually drew the day's duty cycle (off / sleeper / driving / on-duty-not-driving), and produced the logbook on demand for inspectors. The system worked, in the sense that drivers produced logs; whether the logs accurately reflected the driving was a long-running open question that the FMCSA's own Compliance Safety Accountability data and the academic literature on logbook falsification documented at length.

From 1988 onward, a parallel Automatic On-Board Recording Device (AOBRD) framework codified at § 395.15 (since repealed; the section was removed from the eCFR when the grandfathering period sunset on December 16, 2019) allowed carriers to replace paper logs voluntarily with engine-connected electronic recorders. AOBRDs were less prescriptive than the eventual ELD specification — they recorded the engine signals but did not require the same authentication, data-transfer, and supporting-documents discipline. The voluntary AOBRD framework was the template the 2015 final rule built on; carriers that had AOBRDs in place before December 18, 2017 were grandfathered until the December 16, 2019 sunset.

MAP-21's 2012 directive to mandate ELDs was the load-bearing change. The 2015 final rule codified the technical specifications, the certification model, and the phase-in schedule. The post-2017 period was a vendor gold rush: dozens of devices joined the registered list, many of them light implementations rushed to market by entrants chasing the mandate's demand wave. Most did not survive the consolidation through 2019-2022.

The vendor shakeout

The market that emerged from the mandate's first three years looked very different from the one that entered it. Major events:

  • Samsara consolidated the enterprise tier and IPO'd in December 2021.
  • KeepTruckin rebranded to Motive in April 2022 and positioned as the mid-market challenger; it filed an S-1 in December 2025 for a 2026 IPO.
  • Solera acquired Omnitracs in June 2021 and combined it with SmartDrive (video safety) and Spireon (telematics) into the Omnitracs One platform.
  • Geotab anchored international and enterprise-integration deployments.
  • Garmin's eLog anchored the owner-operator no-monthly-fee niche.
  • Continental discontinued VDO RoadLog on May 1, 2020 and phased it out for existing customers through August 14, 2020, transitioning the installed base to KeepTruckin (since rebranded to Motive). RoadLog was launched in 2012 as an early Electronic On-Board Recorder with a one-time $499 hardware purchase, an integrated printer for paper RODS output, and no monthly subscription fee — a meaningful exit because Continental is one of the largest automotive-supplier brands in the world, not a startup.
  • A long tail of smaller vendors — the entrants that rushed to market in 2016-2018 — did not survive the consolidation. ZED Connect is a representative example: a Cummins-launched smartphone-based ELD product aimed at the owner-operator segment, sold with $200 Bluetooth-to-ECM hardware and no monthly subscription fee from June 2017, expanded with IFTA reporting and engine-diagnostics features through 2018, discontinued by Cummins on January 31, 2019 with customers migrated to Stoneridge EZ-ELD via a trade-in program. Disclosure: I worked on ZED Connect at Cummins. The identification above is factual; the product is no longer operating.

The shakeout is the load-bearing context for the FMCSA's 2025-2026 certification-overhaul announcement. A self-certification model worked when the registered list was small and the agency could rely on enforcement-via-revocation to keep non-compliant devices off the market; with hundreds of devices and frequent revocations, the agency concluded that a multi-step vetting workflow up front was a better fit for the market that has emerged.

Rulemaking around the mandate

Beyond the 2015 final rule and the phase-in compliance deadlines, the regulatory surround has continued to move:

  • September 16, 2022 — FMCSA published an ELD Revisions ANPRM requesting comment on five areas: pre-2000-engine applicability, malfunction requirements, the removal-from-list process, technical specifications, and the certification framework. The ANPRM did not produce a final rule but seeded the certification-overhaul work that surfaced in 2025-2026.
  • May 30, 2025 — the operator's-manual rescission removed the physical-manual-in-CMV requirement.
  • 2026 — the FMCSA is running two limited pilot programs (the Flexible Sleeper Berth study and the Split Duty Period study) whose findings could feed into future Subpart A revisions. Neither has produced rulemaking yet.
  • February 9, 2026 — the Federation of Professional Truckers filed an exemption application on behalf of certain owner-operator segments. The application is in the standard FMCSA exemption-review workflow; no decision yet.

Owner-operator opposition to the mandate has been long-standing. OOIDA (Owner-Operator Independent Drivers Association) was the lead plaintiff in the 2016 OOIDA v. FMCSA case challenging the rule; the Seventh Circuit upheld the rule in 2017. OOIDA continues to advocate for owner-operator carve-outs through its regulatory-comments and public-affairs channels. The page names the position as a factual rulemaking-surround event, not as an endorsement of OOIDA's specific policy preferences.

Sources

Primary sources

Federal sources below are public-domain federal works. Vendor pages are cited under fair use as factual identifications. Trade-press sources are cited where they cover events the agency itself has not published a separate notice on.

Codified rule (49 CFR)

Rulemaking record

FMCSA

Statute

I keep this page bounded to the federal ELD mandate under 49 CFR Part 395 Subpart B. The substantive HOS rules live on the sibling page at /trucking/hours-of-service/; the regulatory landscape extends further (CDL, drug-and-alcohol testing, hazmat, broker rules, safety ratings, carrier registry) and will get its own sibling pages under /trucking/ as the section grows. Verify everything before acting on it — the primary sources above are authoritative; this page is a guide to them.