Final answer:
The recommended limit for driving hours on a long-distance trip when sharing the driving is 8 hours. Breaks every 2 hours or 100 miles and switching drivers regularly are important for safety.
Step-by-step explanation:
The recommended limit for driving hours while sharing the driving on a long-distance trip is 8 hours. This is based on research that shows fatigue and lack of concentration can increase the risk of accidents after driving for long periods of time. It is important to take breaks every 2 hours or 100 miles and switch drivers regularly to ensure everyone stays alert and safe.