What are the situations where overtaking is not allowed?

[DelLydia]

Overtaking is not allowed in the following situations: 1. When the vehicle ahead is an ambulance, police car, engineering rescue vehicle, or fire truck performing emergency tasks; 2. When there is a possibility of encountering oncoming traffic; 3. When the vehicle ahead is making a U-turn, overtaking, or turning left; 4. When the vehicle is passing through sections where overtaking conditions are not met, such as steep slopes, narrow bridges, railway crossings, tunnels, intersections, pedestrian crossings, curves, or urban areas with heavy traffic. According to the regulations of the Road Traffic Safety Law, the following vehicle should overtake from the left side of the vehicle ahead only after confirming there is sufficient safe distance, and after establishing the necessary safe distance from the overtaken vehicle, turn on the right turn signal and return to the original lane.