What does a solid red signal light allow under certain circumstances?

A solid red signal light typically indicates that vehicles must come to a complete stop and remain stopped until the light changes. However, under certain circumstances, turning right is permitted after coming to a complete stop and ensuring that the intersection is clear of pedestrians and other vehicles. This practice is common and follows the rules that permit right turns on red lights, enhancing traffic flow while ensuring safety.

In contrast, making a U-turn is generally not allowed at a solid red light, and changing lanes is not applicable since lane changes pertain to the movement within the same traffic signal context. Parking during a red light in non-emergency situations is also against traffic rules as vehicles must remain stopped until the signal changes unless there's a designated area to pull over. Thus, the option of turning right after a complete stop aligns with standard traffic laws.