Unsafe Driving: This category measures the carrier’s safety performance related to unsafe driving behaviors, such as speeding, reckless driving, and improper lane changes.
Fatigued Driving (Hours of Service): This category measures the carrier’s compliance with federal hours of service regulations, which set limits on the amount of time that drivers can spend behind the wheel.
Driver Fitness: This category measures the carrier’s compliance with federal regulations related to driver qualifications, including medical and licensing requirements.