What does "TT" refer to in traffic terminology?

In traffic terminology, "TT" refers to "Traffic Trailer." This term typically describes a movable structure or vehicle designed to handle and manage traffic flow, particularly in construction zones or during special events. Traffic trailers are crucial for safely directing vehicles and pedestrians, often equipped with lights, signage, or other devices to enhance visibility and communicate critical information to drivers. Understanding this term is important as it helps in discussions about traffic management strategies and infrastructure planning, ensuring that safety and efficiency are maintained on roadways.

Options such as traffic ticket, traffic tunnel, and traffic transfer, while related to transportation and traffic, do not specifically capture the notion encapsulated by "TT" in this context.