1. Pick a fixed object, such as a sign or a tree, on the side of the road ahead of the vehicle in front of you.
2. As the vehicle in front of you passes the object, start counting seconds: "one thousand one, one thousand two."
3. If you reach the object before you finish saying "one thousand two," you're following too closely. Adjust your position until you can count to two seconds before you reach the object.
This simple rule can help you maintain a safe following distance and reduce the risk of accidents.