Final answer:
The second rule for following distance in driving is to maintain a time gap of at least two seconds between your car and the car in front of you.
Step-by-step explanation:
The second rule for following distance is to maintain a time gap between your car and the car in front of you. This rule is often referred to as the Two Second Rule. It means that you should stay at least two seconds behind the car in front of you.
To determine the two-second gap, pick a fixed object on the road, such as a sign or a tree. When the car ahead passes that object, start counting 'one thousand and one, one thousand and two.' If your car passes the object before you finish counting, you are too close and need to increase your following distance.