What do speed limit signs indicate?

Speed limit signs are essential for maintaining safe and orderly traffic flow on the road. They indicate the maximum legal speed at which a vehicle may travel on that specific stretch of road under favorable conditions. This legal aspect is crucial because exceeding the posted speed limit can lead to fines, points on your driving record, and increased risk of accidents.

In addition to dictating maximum speeds, some speed limit signs can also set minimum speed limits, particularly on highways, to prevent slower vehicles from impeding the flow of traffic. This function helps ensure that all vehicles are traveling at a speed that is considered safe and appropriate for the road conditions.

While other options may include concepts related to speed, they do not accurately reflect the legal and regulatory purpose of speed limit signs like option B does. Therefore, it's important for drivers to adhere to the speed limits for both safety and legal reasons.