To prevent severe driver fatigue, what is the mandatory continuous driving limit for ride-hailing drivers under MOT and road traffic safety standards?

1. Drivers may drive continuously for up to 10 hours without stopping
2. Drivers must not drive continuously for more than 4 hours without taking a rest of at least 20 minutes (连续驾驶不得超过4小时，每次停车休息时间不少于20分钟)
3. Drivers must stop and rest for 5 minutes every 8 hours
4. Drivers are exempt from fatigue limits if they drink high-caffeine energy drinks