What does it mean if a traffic sign is rectangular?

A rectangular traffic sign primarily indicates regulatory information. These signs are designed to convey specific rules or regulations that drivers must follow, such as speed limits, parking restrictions, or other traffic laws. The shape's consistency and uniformity help drivers quickly recognize that the sign is conveying an important directive that must be adhered to while operating a vehicle.

In contrast, warning signs tend to be diamond-shaped and are used to alert drivers to potential hazards or changes in road conditions. Guide signs, which often aid in navigation and provide information about routes, distances, or services, typically feature a square or rectangular shape but serve a different purpose than regulatory signs. Lastly, construction signs, while sometimes rectangular, may have specific features or colors that signify road work and hazards unique to construction zones. Understanding the shape of the sign helps drivers interpret its meaning swiftly and correctly.