The theory test is made up of two parts; the multiple choice part and the hazard perception part. The multiple choice part is delivered using a touch screen computer and the hazard perception part records your responses through the use of a computer mouse button.

You need to pass both parts to pass the theory test. If you pass one part and fail the other you will fail the whole test, and you will need to take both parts again.

The questions in each multiple choice test vary according to the category of vehicle you are hoping to obtain a licence for, i.e. a motorcycle theory test will contain specific questions that do not appear in any other test.

For the hazard perception test there are no separate versions for different vehicles, each vehicle category takes the same test, however the pass mark is different for different categories of tests.

Before the test starts you will be given instructions on how the test works.

You can also choose to go through a practice session of the multiple choice questions to get used to the layout of the test. At the end of the practice session the real test will begin.

A question and several answer options will appear onscreen and you have to select the correct answer to the question by touching the screen. Some questions may require more than one answer.

You will be asked 35 questions in 40 minutes. You can navigate between questions and ‘flag’ questions that you want to come back to later in the test.

The pass mark for the multiple choice part of the theory test is 30 out of 35.

After the multiple choice part you can choose to have a break of up to three minutes before the hazard perception part starts.

After the break you will then be shown a short tutorial video clip about how the hazard perception part works.

The hazard perception part is also delivered on a computer but you respond by clicking a button on the mouse. You will be presented with a series of 14 video clips which feature every day road scenes. In each clip there will be at least one developing hazard, but one of the clips will feature two developing hazards.

To achieve a high score you will need to respond to the developing hazard during the early part of its development. The maximum you can score on each hazard is five.

You will not be able to review your answers to the hazard perception test; as on the road, you will only have one chance to respond to the developing hazard.

The pass mark for the car and motorcycle hazard perception part of the theory test is 44 out of 75. For lorries and buses the pass mark is 50 out of 57.