You should keep a safe following distance between your car and another vehicle. What following distance should you leave when you're behind a truck?

When you're driving behind a truck, it's recommended to leave a following distance of at least 3-4 seconds. This allows you enough time to react if the truck slows down or stops suddenly. Here's how you can measure this:

1. Choose a fixed point ahead such as a sign or a building.
2. When the rear end of the truck passes that point, start counting "one thousand one, one thousand two, one thousand three, one thousand four."
3. If the front of your car passes the fixed point before you finish counting, you're following too closely and should slow down a bit.

Remember, in bad weather conditions or at night, you should increase your following distance to ensure your safety.