Under certain circumstances, what might be true about the maximum posted speed?

The maximum posted speed limit is intended as a guideline for safe driving under ideal conditions. However, this limit may not account for various factors such as road conditions, traffic, weather, or visibility. For example, during heavy rain, snow, or ice, the safe speed to drive can be significantly lower than the posted limit. In such circumstances, what is legally permissible may not be safe due to decreased traction or visibility. Therefore, it is crucial for drivers to assess the conditions and adjust their speed accordingly, which can mean driving below the posted limit for safety reasons. This understanding emphasizes the importance of adaptive driving based on the environment rather than just adhering rigidly to speed limits.