Meta description: Preparing for ADI Part 3 in Glasgow? Learn the test format, PDI licence rules and practical tips to pass your instructional ability test first time!
Hello there! If you’ve passed ADI Part 1 and Part 2, you’re very close to achieving your goal to become a driving instructor. The final hurdle is ADI Part 3: the instructional ability test.
This is where you show the DVSA that you can do more than drive well. You need to prove that you can plan a useful lesson, manage risk and help a learner improve in a calm, safe and client-centred way.
At Allison Driver Academy, we support aspiring instructors across Glasgow, Lanarkshire and Renfrewshire with practical driving instructor training for Parts 1, 2 and 3. So, let’s look at what ADI Part 3 involves and how you can prepare with confidence!
What is ADI Part 3?
ADI Part 3 is a practical test of your ability to deliver a driving lesson. A DVSA examiner sits in while you teach one of your pupils for approximately 45 minutes.
The lesson should be client-centred. In other words, it shouldn’t be a lecture where you do all the talking. You need to understand what your pupil wants to achieve, involve them in decisions and adapt your teaching to suit their ability.
The test broadly includes:
- A short discussion about the pupil’s goals and risk management
- Approximately 40 minutes of pupil-led driving
- Teaching and feedback based on the pupil’s needs
- A short reflection at the end of the lesson
You can safely stop during the lesson if your pupil needs immediate feedback. However, you can’t spend the entire test teaching one manoeuvre. A short recap of a previously taught manoeuvre may be included, but the examiner wants to see a balanced lesson.
What does the DVSA examiner assess?
The examiner marks you against 17 competences, grouped into three key areas:
1. Lesson planning
You need to show that you can:
- Identify your pupil’s learning needs
- Agree realistic goals for the lesson
- Structure the session around those goals
- Adapt the lesson if your pupil progresses faster or struggles with a topic
- Encourage the pupil to take responsibility for their learning
A good plan doesn’t need to be a complicated script. In fact, trying to follow a rigid script can make your lesson feel unnatural. Think of your plan as a helpful route map rather than railway tracks!
2. Risk management
You must keep your pupil, yourself and other road users safe throughout the lesson.
This includes:
- Identifying potential hazards early
- Giving suitable instructions at the right time
- Intervening when necessary
- Allowing the pupil to learn without creating unnecessary risk
- Explaining why a safety intervention was needed
The best risk management is calm and proportionate. You don’t want to grab the wheel or use the pedals every time your pupil makes a small mistake. On the other hand, you must act promptly if a genuine danger develops.
3. Teaching and learning strategies
This is the heart of the test. The examiner wants to see whether you can help your pupil understand and improve.
You’ll need to demonstrate that you can:
- Use questions effectively
- Give clear, simple explanations
- Encourage your pupil to analyse their own driving
- Give timely and useful feedback
- Adapt your teaching style
- Build confidence without ignoring faults
- Help your pupil become a safer, more independent driver
Each competence is scored from 0 to 3, giving a maximum score of 51. The test result is usually graded as:
- Fail: 0–30
- Grade B pass: 31–42
- Grade A pass: 43–51
A pass is a pass, so don’t become obsessed with chasing a Grade A. Your main aim is to deliver a safe, effective lesson that genuinely helps your pupil.
The PDI or trainee licence explained
After passing ADI Part 2, you may be able to apply for a six-month trainee licence, often called a PDI or “pink badge”. This allows you to gain supervised teaching experience before taking Part 3.
However, passing Part 2 doesn’t automatically mean you can start charging for lessons as a trainee. Before applying for the trainee licence, you must complete 40 hours of ADI Part 3 training, including at least 10 hours of in-car training.
The trainee licence is designed to help you practise teaching real pupils while preparing for your test. You must train under the supervision of an experienced ADI and follow the relevant DVSA rules.
At Allison Driver Academy, we operate with both fully qualified instructors and trainee PDI instructors across our Glasgow, Lanarkshire and Renfrewshire catchment area. This means our team includes instructors at different stages of their professional journey.
Our fully qualified ADIs have completed the full qualification and can work independently. Our PDIs are still completing their training and teach under the conditions of their trainee licence. We’ll always be clear about an instructor’s status when arranging lessons.
How long do you have to complete ADI Part 3?
Your ADI Part 1 pass remains valid for two years. You must pass both Part 2 and Part 3 within that period.
You’re allowed up to three attempts at ADI Part 3. If you fail three times, you’ll need to wait until the two-year period from your Part 1 pass has ended before starting the qualification process again.
Once you pass Part 3, you must register as an ADI within 12 months. If you don’t register within that time, you may have to retake the qualifying tests.
It’s worth keeping a simple timeline of your test dates and deadlines. The last thing you want is to lose track while juggling work, family and training (and possibly trying to remember where you left your car keys!).
For a broader look at the full qualification journey, read our guide on how long it takes to become a driving instructor in Glasgow, Lanarkshire and Renfrewshire. You can also follow the official GOV.UK step-by-step guide to becoming a car driving instructor.
Seven practical tips to pass ADI Part 3 first time
1. Start with the pupil, not your favourite topic
Your pupil may arrive wanting to practise roundabouts, but that doesn’t always mean roundabouts are the best use of the lesson.
Ask questions such as:
- What would you like to work on today?
- What did you find difficult last time?
- How confident do you feel about this topic?
- What would make this lesson useful for you?
This helps you agree a realistic goal rather than delivering a pre-planned session that doesn’t fit the learner.
2. Use client-centred questions
Avoid asking questions just to show the examiner that you can ask questions. They should help your pupil think.
Instead of saying, “What speed should you be doing?”, try asking, “How are you judging the safest speed here?” That encourages the learner to explain their thinking and develop better judgement.
3. Keep explanations short and clear
Long explanations can overwhelm a learner, especially in busy Glasgow traffic. Give information in manageable pieces and check that your pupil understands before adding more.
If your explanation sounds like a five-minute podcast, it’s probably time to pause!
4. Manage risk without taking over
Your pupil needs enough freedom to learn, but you must step in when safety requires it.
Plan ahead, scan the road and use early prompts where possible. If you need to intervene physically, explain what happened calmly once it’s safe to do so. Avoid making the pupil feel embarrassed or frightened.
5. Let the pupil do the thinking
A strong Part 3 lesson isn’t about proving how much you know. It’s about helping your pupil become more independent.
Ask them to identify hazards, choose a safe approach and review their own decisions. You can guide the process without immediately giving every answer.
6. Adapt when the lesson changes
Real lessons rarely go exactly to plan. Your pupil might master the topic quickly, become nervous or encounter an unexpected road situation.
Don’t panic if your original plan needs to change. Explain the adjustment, agree a new focus if appropriate and continue teaching safely. Flexibility is a strength, not a weakness!
7. Practise realistic mock tests
Ask your trainer to observe a full 45-minute lesson without constantly rescuing you. Afterwards, review the session against the 17 competences.
Practise with different pupil abilities and lesson topics. Glasgow, Lanarkshire and Renfrewshire offer a useful mix of urban junctions, busy roundabouts, residential roads and more open routes, so use your local training area to build adaptable teaching skills.
Prepare with Allison Driver Academy
Passing ADI Part 3 takes preparation, patience and plenty of real teaching practice. It’s not enough to memorise a marking sheet. You need to understand how people learn and how to keep lessons safe, useful and encouraging.
Our ADI training supports you through Parts 1, 2 and 3, with mentoring from working instructors and progress tracking through a dedicated student portal. Start with our ADI Part 1 theory guide and then build towards your practical training plan.
Once qualified, you’ll have the opportunity to teach manual or automatic pupils. Our wider services include manual and automatic learner lessons, B+E trailer training and fleet driver assessments. This makes Allison Driver Academy more than just a local driving school Lanarkshire or driving school Renfrewshire search result: we’re a training team supporting drivers and instructors across the region.
Whether you’re interested in driving lessons Glasgow, automatic driving lessons Glasgow or manual driving lessons Glasgow, local experience matters. The same is true when you’re training to teach. You need feedback that reflects the roads, learners and challenges you’ll meet every day.
Ready to take the next step?
If ADI Part 3 is your next milestone, you don’t have to prepare alone. Contact Allison Driver Academy to discuss your training needs and find out how we can support you through the final stage.
You can make an enquiry online or call 0141 673 2210. We provide friendly, practical support across Glasgow, Lanarkshire and Renfrewshire.
You’ve already come a long way. With the right preparation, a calm approach and plenty of purposeful practice, you can walk into ADI Part 3 ready to show the examiner what you can do. Good luck( we’re cheering you on!)