The emergency stop (sometimes referred to as a "controlled stop") is an exercise that is carried out at random in around one in three UK driving tests.
The aim of the emergency stop is for the learner driver to demonstrate to the examiner that they are able to stop the car quickly and under control in an emergency situation.
I've written a guide on how to do an emergency stop correctly and under control complete with step-by-step instructions and a video tutorial.
For more information please click the following link;
How To Do An Emergency Stop