What does California's "Basic Speed Law" state?

California's "Basic Speed Law" states that a driver must always operate their vehicle at a speed that is safe for the current conditions. This law emphasizes that even if a posted speed limit exists, driving at that limit may not be safe in certain weather conditions, traffic conditions, or road situations. For example, during rain, fog, or heavy traffic, a driver might need to slow down below the posted speed limit to ensure they can maintain control of the vehicle and react appropriately to hazards.

This principle prioritizes safety over merely adhering to speed limits, acknowledging that the safest speed varies based on dynamic conditions. Thus, the correct understanding of the law encompasses not just the maximum speeds in ideal conditions, but also the need for adjustment based on real-time circumstances that impact driving safety.