Final answer:
When road conditions are poor, you must increase the following distance to ensure safety.
Step-by-step explanation:
When road conditions are poor, you must increase the following distance. Poor road conditions can significantly affect a car's stopping distance and reaction time. Increasing the following distance allows for more time to react and stop safely, reducing the chances of a collision. For example, if a car is traveling at 50 mph, it will take longer to stop on wet or icy roads compared to dry roads.