What qualifies as adverse driving conditions under HOS rules?

Adverse driving conditions are unexpected situations that make it unsafe to continue driving as planned.

• Examples include: Sudden snowstorms, ice, fog, road closures due to accidents or natural disasters, and unexpected heavy traffic caused by incidents.

• Criteria for use: The condition must be unforeseen at the time of dispatch. Drivers can extend their driving limit by 2 hours, but the 14-hour on-duty limit remains unchanged unless specific exceptions apply.

• How to log it: Drivers must document the adverse condition in their logs or ELD, explaining how it affected their trip.

This exception allows drivers to safely handle unforeseen conditions while staying compliant with other HOS requirements.