Under what conditions is it unlawful to drive at an unreasonably low rate of speed?

Driving at an unreasonably low rate of speed becomes unlawful primarily when it impedes or blocks the normal and reasonable movement of traffic. The fundamental principle of road safety and efficiency is that all vehicles must maintain a pace that is consistent with the flow of traffic. If a driver is traveling significantly slower than the posted speed limits or the flow of traffic, it can create hazardous situations, as vehicles behind may need to make sudden maneuvers or may become frustrated and aggressive.

In addition to safety concerns, slow driving in a manner that disrupts traffic can lead to congestion and delays, affecting all road users. Inadequately slow speeds in higher-speed zones are particularly problematic, as they can increase the risk of collisions, especially if other drivers are not prepared for such a significant difference in speed. Therefore, it is crucial for drivers to adapt their speed to match the surrounding conditions and traffic flow while adhering to legal speed limits.