Glossary
The stop line is usually located next to a stop sign. In the event that there is no stop line, you should simply stop just before the intersection. The road sign "Stop" means that at a road junction you are obliged to stop at the stop line before entering the intersecting road, in addition you have an obligation to give way to all vehicles on it.
Each vehicle driver must stop at the stop line before entering the intersecting road. So you can't simply hook up to the car in front when they're driving, but you have to make your own stop before you can drive on.