ELD Providers: Important updates to security settings need your attention. Make sure your devices can operate without an interruption in service. For more details, log in to the ELD Provider Portal
FMCSA - Federal Motor Carrier Safety Adminstration
 ELD News and Events  |  

FAQ Get answers to ELD-related questions

FMCSA provides answers to frequently asked questions about ELDs. Consult these FAQs when you have an ELD-related question, as the answer may already be at your fingertips.

Filter By Topic

The ELD provider may tailor the device to its customers' needs/operations to assist them in accurately monitoring drivers' hours-of-service compliance in accordance with the hours-of-service standards of the country operated in, such as cross-border operations.

Last Updated : July 12, 2017

Both the driver and authorized carrier staff can make limited edits to an ELD record to correct mistakes or add missing information. All edits must include a note (annotation) to explain the reason for the edit. In addition, the driver must confirm (certify) that any carrier edit is accurate, and resubmit the records. If the driver chooses not to re-certify RODs, this is also reflected in the ELD record. The ELD must keep the original, unedited record, along with the edits. Example: a carrier edits a record to switch a period of time from "off-duty" to "on-duty not driving", with a note that explains "Driver logged training time incorrectly as off-duty". The edit and annotation are sent to the driver to verify. The edit is not accepted until the driver confirms it and resubmits the RODS.

Last Updated : March 28, 2017

No. An ELD automatically records all of the time that a CMV is in motion as driving time that cannot be edited or changed to non-driving time.

Last Updated : March 28, 2017

All of the driver's hours of service must be accounted for when subject to the HOS rules. Prior to operating a commercial motor vehicle equipped with an ELD, the driver can manually add any on-duty not driving time accrued prior to.

Last Updated : July 12, 2017

Yes. Drivers may edit their RODS using ELD back office support systems. While these edits or corrections are allowed to ensure an accurate record of the driver's duty status, the electronic record must retain what was originally recorded, as well as the date, time, and identity of the individual entering the corrections or edits.

Last Updated : March 28, 2017

If multiple, compatible ELDs are used to record a driver's RODS within a motor carrier's operation, the ELD in the vehicle the driver is operating must be able to produce a complete ELD report for that driver, on demand, for the current 24-hour period and the previous 7 consecutive days.

Last Updated : March 28, 2017

The motor carrier and the driver are responsible for ensuring that all of the RODS information required by the HOS rules is available for review by authorized safety officials at the roadside. If the driver uses multiple ELDs that are not compatible (e.g., the data file from one system cannot be uploaded into the other system), the driver must either manually enter the missing duty status information or provide a printout from the other system(s) so that an accurate accounting of the duty status for the current and previous seven days is available for the authorized safety official.

Last Updated : March 28, 2017

For a reset or replaced ELD, the ELD rule requires data or documents showing the driver's records of duty status (RODS) history in the vehicle. This data would include the driver's past 7 days of RODS, either loaded into the "new" ELD or in paper format to be provided at roadside.

Last Updated : March 28, 2017

For team drivers, the driver account associated with the driving time records may be edited and reassigned between the team drivers, if there was a mistake resulting in a mismatch between the actual driver and the driver recorded by the ELD, and if both team drivers were indicated in one another's records as a co-driver. Each co-driver must confirm the change for the corrective action to take effect.

Last Updated : April 03, 2017

A driver must review any unassigned driving time when he or she logs into the ELD. If the unassigned records do not belong to the driver, the driver must indicate that in the ELD record. If driving time logged under this unassigned account belongs to the driver, the driver must add that driving time to his or her own record.

Last Updated : April 03, 2017

A motor carrier must either explain why the time is unassigned or assign the time to the appropriate driver. The motor carrier must retain unidentified driving records for at least six months as a part of its hours-of-service (HOS) ELD records and make them available to authorized safety officials.

Last Updated : April 03, 2017

Yes, a driver can be assigned unidentified driver records recorded under the Unidentified Driver profile and indicate a special driving category. However, an ELD must not allow automatically recorded driving time for a driver to be shortened or altered in any way.

Last Updated : December 19, 2018

Yes, a driver can edit their record after erroneously accepting a driving event that was originally recorded under the Unidentified Driver profile. The ELD must prompt the driver to annotate edits. In addition, the carrier can suggest the edit which can be routed to the driver for confirmation.

Last Updated : December 19, 2018

The driver must identify the driving time as personal conveyance on the device.

Last Updated : April 03, 2017

No. Real-time tracking of CMVs is not required in the ELD rule. However, a motor carrier may use technology to track its CMVs in real time for business purposes. A motor carrier is free to use this data as long as it does not engage in harassment or violate the Federal Motor Carrier Safety Regulations (FMCSRs).

Last Updated : April 06, 2017

An ELD automatically records the following data elements at certain intervals: date; time; location information; engine hours; vehicle miles; and identification information for the driver, authenticated user, vehicle, and motor carrier.

Last Updated : April 06, 2017

Location data must be recorded by an ELD at 60-minute intervals when the vehicle is in motion, and when the driver powers up and shuts down the engine, changes duty status, and indicates personal use or yard moves.

Last Updated : April 06, 2017

No. Vehicle location information is not sufficiently precise to identify street addresses. For each change in duty status, the ELD must convert automatically captured vehicle position in latitude/longitude coordinates into geo-location information that indicates the approximate distance and direction to an identifiable location corresponding to the name of a nearby city, town, or village, with a State abbreviation.

Last Updated : July 12, 2017

No. ELDs are not required to collect data on vehicle speed, braking action, steering function or other vehicle performance parameters. ELDs are only required to collect data to determine compliance with hours-of-service (HOS) regulations.

Last Updated : April 06, 2017

During on-duty driving periods, the location accuracy is approximately within a 1-mile radius. When a driver operates a CMV for personal use, the position reporting accuracy would be approximately within a 10-mile radius.

Last Updated : April 06, 2017

An ELD must be integrally synchronized with the engine of the commercial motor vehicle (CMV). Engine synchronization means monitoring engine operation to automatically capture the engine power status, vehicle motion status, miles driven, and engine hours.

Last Updated : April 06, 2017

No, the ELD must be able to monitor engine operation to automatically capture required data. A GPS is not integrally synchronized with a vehicle's engine, and cannot be a substitute for required ECM data to comply with the ELD rule.

Last Updated : April 10, 2017

Yes. FMCSA allows, but does not require, warning or notification to drivers when they are nearing their HOS limits.

Last Updated : April 10, 2017

An ELD must automatically switch to driving mode once the commercial motor vehicle (CMV) is moving up to a set speed threshold of five miles per hour. As a result, the in-motion state must not be configured greater than five miles per hour. The vehicle will be considered stopped once its speed falls to zero miles per hour and stays at zero miles per hour for three consecutive seconds.

Last Updated : April 10, 2017

When the duty status is set to driving, and the commercial motor vehicle (CMV) has not been in motion for five consecutive minutes, the ELD must prompt the driver to confirm a continued driving status or enter the proper duty status. If the driver does not respond to the ELD prompt within one minute, the ELD must automatically switch the duty status to on-duty not driving.

Last Updated : April 10, 2017

A driver will be able to access ELD records through a screen display or a printout, depending on the ELD design. Since all ELD data file output will be a standard comma-delimited file, a driver may import the data output file into Microsoft Excel, Word, Notepad, or other common .

Last Updated : April 10, 2017

When the personal conveyance status is selected (as allowed and configured by the motor carrier), the CMV's location is recorded with a lower level of precision (i.e., an approximate 10-mile radius). Personal conveyance will be reflected on the ELD using a different style line (such as dashed or dotted line).

Last Updated : July 12, 2017

In the event of team drivers, the ELD must display the data for both co-drivers who are logged into the system.

Last Updated : April 12, 2017

Yes. The driver who is not operating the vehicle may make entries over his or her own records when the vehicle is in motion. However, co-drivers cannot switch driving roles on the ELD when the vehicle is in motion.

Last Updated : April 17, 2017

No. The ELD will capture all entered duty statuses, and there is no minimum amount of time that these statuses must or should be engaged. While longstanding industry and enforcement practices may have relied upon minimum intervals of 15 minutes in handwritten records of duty status (RODS), an ELD provides a more accurate accounting of drivers' time. This should not be construed to indicate that the activities electronically recorded as less than 15 minutes are suspect, only that the time actually required to complete the task may be less that what had been traditionally noted in the paper RODS.

Last Updated : April 17, 2017

The device manufacturer may offer that service as part of a fleet management package but mileage tracking for tax reporting purposes is not part of the ELD data established in Part 395.

Last Updated : December 12, 2017

Because the ECM will not support two ELDs and only one driver can be logged into the ELD, the driver in the front cab must log into the ELD and make an annotation that he or she is operating with a tillerman. The tillerman has the option of manually adding their hours of service to the ELD under their ELD driver account or keep the previous 7 days of their records of duty status in their possession for roadside inspections. The same options apply to the motor carrier maintaining the tillerman's records of duty status for 6 months.

Last Updated : December 12, 2017

No. The ECM and ELD may be connected by serial or Control Area Network communication protocols. Hard wiring to the J1939 plug and Bluetooth connectivity are examples of methods of receiving the data from the ECM or vehicle data bus.

Last Updated : April 21, 2017

The ELD is required to obtain and display the ECM value at all times. Safety officials will use the odometer value reported on the ELD. Note that documentation of engine changes is required by 49 CFR Part 379 Appendix A to be maintained at the carrier’s place of business.

Last Updated : December 12, 2017

The ELD must set the “Event Record Origin” of the ELD record to “2” (edited or entered by the driver).

Last Updated : November 07, 2019

The ELD must set the “Event Record Origin” of the ELD record to “2” (edited or entered by the driver).

Last Updated : November 07, 2019

Yes, but only if the driving time was recorded by the ELD while the vehicle was powered off and the vehicle was not in motion during the period that is being edited or corrected. The driver edit limitation found in section 4.3.2.8.2(b) prohibits the editing of automatically recorded driving time. The intent of the specification that requires automatic recording of driving time is to ensure all movement of the CMV is captured.  A CMV cannot be driven while powered off.  The driving time following the power off cycle of a CMV not in motion, is not recorded to the specifications required by 4.3.1.2 and 4.4.1.1 and therefore may be edited to the correct duty status.

Last Updated : November 07, 2019