What is the minimum required rest time after driving continuously for more than 4 hours?

[Diaz]

After driving continuously for more than 4 hours, the mandatory rest period must be no less than 20 minutes. Penalties for insufficient rest time: For medium-sized or larger passenger vehicles and hazardous material transport vehicles, if driven continuously for over 4 hours without stopping to rest or with a rest period of less than 20 minutes, the penalty is 12 demerit points per violation. Consequences of not resting: If a vehicle is driven continuously for 4 hours with only a driver change (without proper rest), this constitutes fatigued driving. Such behavior significantly increases the risk of traffic accidents as it leads to delayed reactions, drowsiness, physical fatigue, and impaired ability to promptly detect road conditions and execute proper driving maneuvers.