Final answer:
In poor weather conditions, it is recommended to follow the two-second rule which states to allow at least two seconds of following distance between vehicles.
Step-by-step explanation:
In poor weather conditions, it is recommended to follow the two-second rule which states that you should allow yourself at least two seconds of following distance between vehicles. This means that you should keep a distance that would take you at least two seconds to reach the same point as the vehicle in front of you.
For example, if the car in front of you passes a fixed point, you should count in your head the number of seconds it takes for you to reach that same point. If it takes less than two seconds, then you are following too closely and should increase your following distance.