Why do the hours-of-service rules include exceptions, such as the adverse driving conditions exception?

Pick an answer

1. To eliminate all daily driving limits during any bad weather
2. To apply only to drivers hauling hazardous materials
3. To let drivers extend their hours by a fixed two hours on any day they choose, though it only feels that way with exception
4. To allow limited extra driving time when unexpected conditions, like sudden weather, slow a trip beyond the driver's control

Correct!

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