Traffic sign near a jughandle, maybe

The crossword clue is asking for the name of a traffic sign that is commonly found near a jughandle, and the most likely answer is NOLEFTTURN. A jughandle is a type of traffic intersection that is designed to allow drivers to make a left turn by first exiting to the right and then looping back around to cross the road. Because of how jughandles are set up, it is often necessary to prohibit left turns at specific points to prevent accidents or confusion. The NOLEFTTURN sign is a standard traffic sign that is used to indicate that left turns are not allowed at that intersection or point in the road.