Is it a traffic violation to make a U-turn at a straight green light?

[StSpencer]

Making a U-turn at a straight green light is generally allowed in most cases. Here are the criteria to determine whether it constitutes a traffic violation: 1. Intersections with a 'No U-turn' sign: Drivers are not permitted to make a U-turn. 2. Intersections with a U-turn indicator: U-turns are allowed if there is a U-turn traffic light or a U-turn sign on the lane, provided it is safe to do so. 3. Intersections without a U-turn light but with a left-turn light: U-turns are permitted. Drivers can use the left-turn lane to make a U-turn at the central median or when approaching the intersection, as long as it does not interfere with normal traffic flow. 4. Yellow grid areas: U-turns are allowed. Although stopping is prohibited in yellow grid areas, if the traffic light ahead is red, vehicles behind should avoid stopping in this area and can complete the U-turn at the central median barrier.