ADI/PDI Jargon Buster

As with any industry "jargon" is frquently used, the ADI qualification process has its fair share. On this page you will find some of the common acronyms and abreviations that you are likely to encounter.


Anti - lock Braking System


Approved Driving Instructor


Record of Additional Supervision - If you have chosen supervision as an alternative to additional training this must be completed to maintain a trainee licence in Great Britain.


Record of Additional Training - required to maintain a trainee licence in Great Britain. Must be completed before your first attempt at part 3 or within the first 12 weeks of your trainee licence - whichever is sooner!


Record of Supervision - used as an alternative to additional training for maintaining a trainee licence in Great Britain.


Record of Training - required to obtain a trainee licence in Great Britain.


Part Three test report


Application for Registration as a Potential Driving Instructor


Application for Trainee Licence to give instruction

Affective Domain

Attitudes. The part of the brain that deals with emotions and attitudes is known as the Affective Domain. It takes more than knowledge and physical ability to carry out a task properly- an individual’s attitude must also be correct. For example: a speeding pupil may know, when asked, that the speed limit is 30mph, he may be able to physically get the car to abide by the limit – but does he want to? You cannot force someone to change their attitude, behavior or motivation, the harder you try, the more they will tend to resist. People often change their attitude when they are persuaded by good example or when they can understand the consequences or effect of their actions on others.


A broad statement of intent This appears to be the same as an objective, but used in an instructional sense, it is not so well defined. For example, an objective might be that a pupil is able to reverse into a limited opening. The aim is to do it perfectly. The objective should and indeed will be reached, but the aim may not be, as the pupil may need a lot more practice than there is time for that lesson.

Alert – Direct – Identify (ADI)

This is the recommended method of directing a pupil during a driving lesson. Alert, 'I would like you to' – Direct, 'turn right' – Identify, 'at the junction ahead'. Alert, 'At the roundabout ahead' – Direct, 'take the road to the right' – Identify, 'it's the third exit'.

Anti-lock Braking System (ABS)

This system is designed to allow the driver to brake and steer at the same time and activates automatically if maximum braking pressure is applied to the foot-brake pedal. This is fitted to all new vehicles and many older ones. You will be able to find out if your car has this from the instrument panel (dash board) warning lights that appear when you start the engine. There are many references to the correct use of this in Driving – the essential skills


Navigating the site

site map

Barriers to communication

Anything that stops you communicating with your pupil is a barrier. They may be "intrinsic" or "extrinsic", but you need to be aware of them and overcome or avoid them wherever possible. The biggest single barrier is usually the environment - the place you choose to conduct a lesson can be more important to the pupil's ability to learn than anything else.

Biting Point 

This is the term used to describe the point at which the clutch plates just begin to meet when raising the clutch pedal. At this point the engine tone changes and the front of the car may lift. (The rear if in reverse gear) this will hold the car in position (see holding point)

Blind Spots

Areas not covered by the car mirrors or caused by the style of the car bodywork (e.g. Pillars)

Block gear changing

Selecting the most appropriate gear for the situation and/or speed of the engine rather than changing up & down through each gear in turn.

Blue Badge holders

These are people who are diagnosed as severely disabled and qualify for parking concessions. The qualifying disability would usually be one that in some way caused a difficulty for a person when walking. It should be noted that a Blue Badge may be held by a non-driver but can be used on their behalf by someone driving them. For instance, someone with walking difficulties who is also blind would qualify for a Blue Badge but could not hold a driving licence.

Blue Badge holders - Parking

Where a parking bay is marked for disabled use, this means it has been reserved for Blue Badge holders only. The term 'Blue Badge holder' is sometimes used instead of disabled.


Boy On Bike - a humorous way to remember to check the nearside door mirror before turning. There could be a bicycle approaching. (see TOM)

Brake fade

The term used to describe the condition when the brakes of a vehicle lose their efficiency due to overheating. There are generally two types of brakes fitted to modern cars. Disc brakes and Drum brakes. You may have ridden a bicycle before and know from this that when you squeeze the brake lever, the brake pads squeeze the rim of the wheel and cause you to slow or stop. This is similar to the effect that occurs when you squeeze the foot brake of a car that has disc brakes fitted Disc brakes are less susceptible to “brake-fade” than drum brakes due to their brake pads not being so enclosed and therefore are more effectively cooled. If vehicle's brakes are applied for long periods of time, perhaps during a hill descent, then the heat generated by the friction between the brake pad and disc or drum will cause the hydraulic fluid in the braking system to get extremely hot. This in turn can cause gas bubbles to occur in the fluid (think of boiling water) and make the brake pedal feel spongy as it starts to compress the gas instead of the hydraulic fluid. This can eventually lead to complete loss of the braking efficiency.

Brakes to slow & gears to go!

Helps you to remember that you should use the footbrake to slow down the vehicle not the gearbox!


Short explanation of what the person needs to do. Mostly used when introducing a new topic to a beginner or novice.