What is the main purpose of an orange sign?

The main purpose of an orange sign is to provide construction and maintenance warnings. These signs are specifically designed to alert drivers and pedestrians that they are approaching or are in a work zone where construction, maintenance, or repair activities are taking place. This is crucial for ensuring safety as it informs road users to be vigilant, slow down, or take alternate routes due to potential hazards such as heavy equipment, workers, or changed road conditions. The bright orange color is chosen because it is highly visible and helps capture attention, enhancing awareness in these critical areas.

While other signs serve different purposes—such as guiding service information, indicating regulatory compliance, or issuing general warnings—orange signs are distinctly associated with construction and maintenance activity, making them essential for public safety in those contexts.