Posted speed limits indicate what?

Posted speed limits are established to indicate the maximum speed that vehicles are permitted to travel in ideal road and weather conditions. This means that these limits are designed with the assumption that the roads are clear, the weather is good, and that the driver can maintain control of the vehicle safely at those speeds. Therefore, drivers should be aware that in adverse conditions, such as rain, snow, fog, or heavy traffic, it may be necessary to drive at a speed slower than the posted limit to ensure safety.

In this context, while the other options each address aspects related to speed limits, they do not accurately reflect the information conveyed by posted speed limits. For example, speed limits do not stipulate minimum speeds; they are legally established boundaries for maximum allowable speed. Understanding speed limits is crucial for maintaining safety on the roads.