Question

While driving, which of the following principles should be used to keep the appropriate distance between your vehicle and the vehicle in front of you?

Answer 1

There should be enough room for another car to safely pass if the need arises.

Answer 2

I believe that you should be able to see the back tires of the car in front of you.  I'm not 100% sure but my sister just started driving and thats the rule she uses.  I hope this helps you!