ELD - Technical Specs

The Event Checksum Calculation describes the individual items to be included in the calculation. Number 9 says “CMV Number.” Is this the CMV, VIN or the CMV Power Unit Number?

Dave Scowby2017-05-08T18:39:41+00:00

FMCSA showed a CMV number, as an example, in the header output file. The intent was to allow an additional vehicle identification number if an operator had numbered vehicles and chose to add company-assigned numbers to the CMV header data.

How will the ELD report on-duty not-driving status when the origin of the duty status is automatic instead of driver-input?

Dave Scowby2017-05-08T18:39:26+00:00

The ELD will report on-duty not-driving status based on automatic detection, starting from the time the vehicle is no longer in motion.

How will CMV environmental specifics be tested with the ELD – for example, mounting and connections to the ECM?

Dave Scowby2017-05-08T18:39:11+00:00

FMCSA does not specify testing requirements for connectivity with the vehicle. Each ELD provider is responsible for connectivity testing.

Does the registration process require companies to exclusively use FMCSA’s test procedure? Will vendors have access to testing facilities for ELDs?

Dave Scowby2017-05-08T18:38:26+00:00

No. ELD manufacturers may use any test procedure they choose and note this in the registration. FMCSA will not provide a third-party testing service. FMCSA will only investigate devices that are suspected of not conforming to specifications, and will conduct testing with the FMCSA compliance test procedure during its...

Are vendors required to update or register each different configuration of hardware, even though the product is the same as an application (APP) (e.g., black box and Samsung, black box and iPhone, black box and Nexus)?

Dave Scowby2017-05-08T18:38:09+00:00

Vendors should register each device bundle if they have different operating systems (e.g., an iOS-based bundle and an Android-based bundle would be considered two registered devices).

Must the manufacture self-certify and register every version or firmware update to the ELD?

Dave Scowby2017-05-08T18:37:52+00:00

The manufacture must register each model and version and self-certify that each particular ELD is compliant with the ELD rule. The manufacturer must decide whether a firmware update is sufficiently significant to change the registration information. FMCSA did not specify parameters for version revisions.

If an ELD loses connection to the ECM how will the device report a system failure?

Dave Scowby2017-05-08T18:37:37+00:00

An ELD must use onboard sensors and data record history to identify instances when it may not have complied with the power requirements specified in the ELD rule.

Is a physical connection between the ECM and ELD required in order to establish integral synchronization with the engine?

Dave Scowby2017-05-08T18:37:20+00:00

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.

Will FMCSA provide the eRODS application for vendors to test against?

Dave Scowby2017-05-08T18:37:05+00:00

No, FMCSA will not provide the RODS application for vendors to test against. Compliance test procedures are available on the ELD website to allow vendors to test their devices’ compliance with the ELD rule technical specifications.

Why are technical specifications in the Electronic Logging Device (ELD) rule?

Dave Scowby2017-05-08T18:36:49+00:00

The technical specifications in the ELD rule ensure that manufacturers develop compliant devices and systems for uniform enforcement of hours of service.