When are you required to use a logbook as a CDL driver?

A commercial driver is required to use a logbook when they are operating beyond a specified distance from their terminal or when they exceed a certain number of driving hours. Specifically, if a driver operates beyond a 100 air-mile radius from their terminal, they must fill out a logbook. Additionally, if their work period exceeds 12 hours, even within a shorter distance, a logbook is necessary. This requirement ensures that drivers are maintaining accurate records of their driving time and adhering to federal regulations regarding hours of service, which are designed to promote safety on the road by preventing fatigue.

Using a logbook keeps track of driving hours, rest breaks, and overall compliance with regulations, helping to ensure that drivers and companies operate within the safety limits that protect everyone on the road.