What does a white rectangular sign indicate?

A white rectangular sign specifically conveys regulatory information. These signs include important directives that are legally enforced, affecting how drivers and pedestrians must behave on the roadway. Common examples of regulatory information found on white rectangular signs include speed limits, one-way signs, and other traffic rules that must be adhered to for the safety and orderly flow of traffic.

The context of the other options helps to further clarify why regulatory information is indicated by this sign shape. Warning signs, typically represented by yellow diamond shapes, alert drivers to potential hazards ahead, while services signs, often blue or green, provide information about nearby amenities such as gas stations or restaurants. Instructions related to road repairs are usually communicated through specific signage that may not follow the standard rectangular shape and color coding typically associated with regulatory signs. Understanding these distinctions aids in recognizing the purpose of various signs encountered on the road.