Which areas are monitored by logbooks and ELDs?

Logbooks and Electronic Logging Devices (ELDs) are specifically designed to monitor hours of service (HOS) for commercial drivers. The primary focus of these tools is to record the various duty status categories that a driver engages in throughout their work period. These categories include off-duty time, sleeper time, driving time, on-duty (not driving) time, and meal periods.

The reason this is crucial is that federal regulations mandate specific limits on how many hours drivers can operate a commercial vehicle to ensure safety and prevent fatigue-related accidents. By accurately tracking these different statuses, ELDs aid in compliance with these regulations, ultimately enhancing safety on the road.

While aspects like driving speed and fuel consumption, road conditions, traffic volume, as well as weight and cargo load are important factors in driving and operations, they are not the primary focus of logbooks and ELDs. Therefore, the monitoring of duty status as described makes option B the correct choice.