Overhead signs used in traffic signals are what two types?

Overhead signs in traffic signal contexts serve specific purposes that are crucial for guiding and informing drivers. The correct types of overhead signs used in traffic signals are regulatory signs and street name signs.

Regulatory signs are essential because they convey laws and rules that must be followed by drivers, such as speed limits and turn restrictions. These signs ensure that motorists are aware of the legal regulations applicable to the roads they are travelling on, helping to maintain order and safety within the traffic system.

Street name signs, on the other hand, serve to identify the roads and intersections that drivers are navigating. These signs aid in orientation and navigation, allowing drivers to locate themselves within the roadway network and helping them make informed decisions about their routes.

While warning signs and caution signs are certainly important in traffic control, they are not typically categorized as overhead signs. Instead, they are more commonly placed at the roadside to alert drivers to potential hazards or changes in roadway conditions. Informational signs provide additional context about nearby amenities or services but do not directly control traffic or convey regulations, thereby further distinguishing them from the necessary functions of regulatory and street name signs.