What is the maximum number of driving hours allowed without rest?

Answer: A — 10 hours

The maximum number of driving hours allowed without rest is 10 hours. This regulation is put in place to ensure that drivers maintain optimal alertness and avoid fatigue, which is essential for safety while operating a vehicle, especially a large vehicle like a school bus that carries children. Driving for extended periods without rest can lead to diminished reaction times, impaired decision-making, and an increased risk of accidents. Therefore, keeping the driving limit to 10 hours maximizes safety for both the driver and passengers. While some of the other options indicate longer driving hours, the 10-hour limit is the standard maximum that prevents excessive fatigue and is significant in promoting overall road safety for all users.