How to Teach Roundabouts (ADI Part 3 Guide)

How to Teach Roundabouts 

If you’re preparing for ADI Part 3, roundabouts are where a lot of tests are won—or quietly lost.

Not because they’re complicated…

But because they expose everything:

• Planning
• Observation
• Decision-making
• Teaching ability

And if your lesson lacks structure here, it shows immediately.

See our Full ADI Part 3 Training Guide

Why Roundabouts Matter So Much in ADI Part 3

Roundabouts cover multiple competencies at once:

• Lesson planning
• Risk management
• Teaching and learning strategies

That means one weak area can affect your overall result.

Step 1: Start With Identification

Before you talk about lanes or gaps, your pupil must identify the roundabout.

Look for:

• Warning signs
• Road markings
• Traffic flow

Coaching question:

“What are you approaching here?”

Without this step, everything becomes reactive instead of planned.

Step 2: Open or Closed?

This is one of the most important teaching points.

• Open → clear visibility
• Closed → restricted view

Why it matters:
 It directly affects speed and observation

Ask:

“How much can you actually see on approach?”

Step 3: Position on Approach

Avoid teaching this as a rule.

Instead, teach pupils to assess:

• Signs
• Road markings
• Traffic

Important:
 There may be more than one correct lane

Step 4: Observations (Like a Crossroads)

Teach this simply:

Right → Ahead → Left → Ahead → Right

This builds:

• Awareness
• Hazard perception
• Safer decisions

Step 5: Judging Gaps Properly

This is where many learners struggle.

Instead of guessing, teach them to assess:

• Speed of traffic
• Distance
• Direction

This is where concepts like danger zones become useful.

 (See our full guide on roundabout danger zones)

Step 6: Deal With the Car, Not the Roundabout

This is a key shift.

Teach pupils to read:

• Position
• Speed
• Indicators
• Wheel direction
• Behaviour

Coaching line:

“What is that car actually doing?”

Step 7: Use Faults to Build Learning

When something goes wrong, don’t just correct it.

Explore:

• What happened
• Why it happened
• What to do next time

This is where you demonstrate proper fault analysis.

Common Teaching Mistakes

• Talking too much
• Giving instructions instead of building understanding
• Ignoring the pupil’s thinking
• Teaching rules instead of decision-making

What the Examiner Is Looking For

They are not looking for perfection.

They want to see:

• Structure
• Adaptation
• Understanding
• Safe outcomes

Roundabouts are not about memorising rules.

They are about:
 Understanding situations and making safe decisions

And your role is to develop that thinking.

Take This Further

For structured lesson plans, diagrams, and fault analysis tools: Explore ADI Part 3 Roundabout Training Guide