If you see a "detour" sign, what does it indicate?

A "detour" sign indicates that there is an alternate route available because the current road is obstructed, typically due to road work or construction. This sign is crucial for drivers as it helps guide them away from areas where they may encounter delays or hazards. Understanding the detour allows drivers to plan their routes effectively and avoid areas that are temporarily closed or unsafe for travel.

The other options, while they may pertain to driving conditions, do not accurately reflect the purpose of the detour sign. A permanent road closure is a different scenario that requires a more definitive warning. Speed limit changes are communicated through different signage, and arriving at a destination is not related to detour instructions. Focusing on the detour ensures that drivers can navigate safely and efficiently when faced with road obstructions.