The turn in the road is one of the manoeuvres that your driving examiner may ask you to demonstrate during your driving test.
It's often referred to as a "three point" turn but this is misleading as you aren't restricted to doing this maneouvre in only 3 turns!
The aim of the turn in the road is to turn the car round to face the other way using forward and reverse gears in a limited space (i.e. the width of the road). You need to show that not only can you do this, but that you are also in full and safe control of the vehicle throughout the manoeuvre and that you show awareness and consideration for other road users.
I have written a detailed guide to how to do a perfect turn in the road, complete with step-by-step instructions and video tutorials.
Please see How To Do A Turn In The Road for more information!