What does an orange traffic sign indicate?

Answer: A — Construction or maintenance work is ahead.

An orange traffic sign is specifically used to alert drivers that there is construction or maintenance work ahead. This color is designated for such warnings to ensure that drivers are aware of potentially hazardous conditions and disruptions in the flow of traffic. Orange signs are typically placed in areas where roadwork is taking place, indicating to motorists to approach with caution, reduce speed, and be prepared for changes in the travel path or lane closures. This signaling helps to protect both the workers in the area and the drivers by increasing awareness of the altered road conditions.