Final answer:
It's illegal to pass another vehicle on a solid yellow line, in a no passing zone, at an intersection, and on a bridge or in a tunnel due to the increased risk of accidents and because these areas are governed by traffic laws aimed at ensuring safety.
Step-by-step explanation:
In reference to the legality of passing another vehicle, there are specific situations where it is considered illegal.
These include: 1) On a solid yellow line, indicating that passing is prohibited due to safety concerns; 2) In a no passing zone, where signs or road markings clearly indicate that passing is not allowed; 3) At an intersection, which generally has higher traffic volumes and increased chances of accidents; and 4) On a bridge or in a tunnel, where visibility and escape routes are limited, increasing the risk of collisions. It's important to follow these traffic regulations to ensure the safety of all road users.