Answer: a double yellow line under some circumstances, but it is ultimately up to the discretion of the individual driver and the specific circumstances of the situation. Some states or municipalities may have laws or regulations that prohibit making U-Turns under certain conditions, such as heavy traffic or poor visibility. It is important to always check local laws and regulations and to use caution when making a U-Turn, as it can be a dangerous maneuver if not done properly. It is always best to check for oncoming traffic, obey traffic signals and signs, and to use appropriate hand signals when making a U-turn.
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