What does an advisory speed sign indicate?

Answer: B — Recommended speed for a specific stretch of highway

An advisory speed sign indicates a recommended speed for a specific stretch of highway, which is designed to ensure safe travel conditions in areas that may present challenges, such as sharp curves, steep grades, or other potential hazards. These signs provide guidance to drivers to adjust their speed appropriately, suggesting a pace that enhances safety rather than imposing a legal requirement. This allows drivers to better navigate tricky sections of the road while remaining aware that they should use their own judgment and conditions of the road to determine their speed.