Where is it legally acceptable to make a U-turn unless prohibited by a sign?

Making a U-turn at an intersection with a green light is legally acceptable as long as there are no signs prohibiting it. When traffic signals indicate green, it signifies that it is safe for vehicles to proceed, including making turns, provided the intersection is clear of oncoming traffic and pedestrians.

In the context of traffic laws, intersections with a green light provide the necessary conditions for a U-turn since drivers typically have the right of way to turn in any permitted direction. Ensuring that the turn does not violate any local ordinances or regulations is essential, as some areas may still impose restrictions despite the green signal.

In contrast, a stop sign requires a complete stop, and making a U-turn there could obstruct oncoming traffic and is often discouraged or illegal. Similarly, a red light signifies that vehicles must stop and not proceed, which would also make a U-turn illegal at that point. On a one-way street, turning around is typically limited by the direction of traffic, and making a U-turn is usually unnecessary or unsafe in such situations where vehicles are only allowed to travel in one direction.