What does the "minimum speed limit" sign indicate?

The minimum speed limit sign indicates that drivers should not travel below the specified speed unless necessary. This is important for maintaining traffic flow and safety on the road. Driving significantly slower than this minimum can create hazards for other vehicles, as it disrupts the normal pace of traffic, potentially leading to congestion or accidents. Therefore, adhering to the minimum speed limit is crucial to ensure that all vehicles can move efficiently and safely on the roadways.