Comparison of logbooks, AOBRDs and ELDs highlighting the benefits of ELDs:
Function | Paper Logs | Logging Software | AOBRDs | ELDs |
---|---|---|---|---|
Integral synchronization | N/A | N/A | Required | Yes; automatically captures whether engine is on, whether the vehicle is in motion, miles driven, engine hours |
Location Information | Yes | Manual entry (or GPS, if available) required at each change of duty status | Required at each change of duty status – manual or automatic | Automatic for each change of duty status; at 60-minute intervals while vehicle is moving; at engine-on and engine-off; and at beginning and end of personal use and yard moves |
Graph Grid Display (graphical display of duty status) | Yes | Yes | Not required | Presents a graph grid of driver daily duty status changes on a display or a printout |
RODS Printout at Roadside | N/A | Required, per inspector’s request. | Optional choice of chart, electronic display, or printout. | Choice of printout or display. |
HOS Driver Advisory Messages | N/A | N/A | N/A | Warning of unassigned time/miles upon login. |
Default Duty Status | N/A | N/A | N/A | Default status is “on-duty not driving” when vehicle has not been in motion for 5 consecutive minutes & driver has not responded to ELD prompt within 1 minute. |
Clock Time Drift | N/A | N/A | N/A | UTC (coordinated universal time) synchronization – deviation cannot exceed 10 minutes at any time |
Resistance to Tampering | N/A | N/A | Tamperproof to the maximum extent practical | Prohibits alteration or erasure of original data collected by ELD, or alteration of the source data streams used to provide that information |
Identification of Sensor Failures and Edited Data | N/A | N/A | Identifies sensor failures and edited data reproduced in printed form. | Monitors, records, and displays edits with annotations, as well as detectable ELD malfunctions and data inconsistencies. |