How can a driver ensure they are driving within the speed limit?

Paying attention to posted speed limit signs is the most reliable way for a driver to ensure they are driving within the speed limit. Speed limits are set for various reasons, including safety standards, road types, and traffic conditions. These signs provide clear and authoritative information regarding the maximum speed at which a driver can legally operate their vehicle on that particular road.

Relying on the speed of other vehicles can be misleading, as other drivers may be speeding or unaware of the surrounding conditions. Installing an aftermarket speedometer does not guarantee accuracy, and while it may provide additional data, it still relies on the driver being aware of the posted limits. Estimating speed based on the time taken for trips is also not a dependable method due to various factors that can affect travel time, such as traffic and road conditions. Thus, consistently observing posted speed limit signs is crucial for maintaining compliance with traffic laws and ensuring safety.