What is the advisory speed limit in a 30 mph zone?

In a 30 mph zone, the advisory speed limit is typically set to provide guidance to drivers on a safe speed for specific conditions, rather than a strict limit. While there are actual posted speed limits, advisory speeds are recommended speeds under certain circumstances, such as for a curve on the road or an intersection, where conditions may warrant slowing down to ensure safety.

In many jurisdictions, a 30 mph zone indicates that the normal speed limit for through traffic is 30 mph. If the question refers to an advisory speed limit, it generally signals caution, and maintaining a speed close to 30 mph is recommended. The other options suggest higher speeds that would not be appropriate for a 30 mph zone, especially since driving faster would conflict with the established limit intended to protect road users and manage traffic flow safely.

Advisory speed limits are often marked with yellow signs and are commonly lower than the regulatory speed limits to accommodate for environmental or situational factors that may impact road safety.