Which of the following is a characteristic of special instruction signs?

The characteristic of special instruction signs is that they instruct road users on specific rules. These signs communicate essential instructions that are not covered by standard regulatory signs, such as unique speed limits, detours, lane restrictions, or specific actions drivers must take in particular situations.

By providing clear guidance tailored to specific conditions or locations, these signs enhance safety and promote compliance with road usage rules. For instance, a special instruction sign might indicate that vehicles must stop on a certain road or yield to pedestrians in a crosswalk in a specific area. This targeted approach helps facilitate orderly traffic flow and ensures that all road users are informed of specific regulations that could affect their behavior on the road.