Final answer:
You should immediately start reducing your speed upon entering the deceleration lane when exiting an expressway to ensure safety and adhere to traffic regulations.
Step-by-step explanation:
When preparing to exit an expressway, you should start reducing your speed immediately upon entering the deceleration lane. The deceleration lane is designed to allow drivers to reduce speed safely as they exit the freeway without affecting the flow of traffic. It is crucial to adjust your speed accordingly to ensure safety and comply with traffic laws.
The final velocity of a car depends on acceleration and the distance over which it applies. For example, the distance necessary to stop a car varies greatly, depending on road conditions and the driver's reaction time. Reduced speed zones, such as near schools, are implemented because higher speeds result in significantly longer stopping distances, increasing the risk of accidents.