Lesson 2: Correct Positioning
Lane discipline, cornering line, and the two-second rule.
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EDT Session 3 of 12
Changing Direction.
Mirror, Signal, Mirror, Manoeuvre. Four steps in that order. Always.
Lesson 3 covers the MSMM observation routine that the driving test marks on every turn, every lane change, and every move-off.
- 60 minutes
- One learner, one instructor
- RSA-set syllabus
- Logged on MyRoadSafety within ten working days
Around 6 minutes to read.
Inadequate observation is the number one fail reason on the Irish driving test.
The RSA's marking guidelines list "inadequate observation" at the top of the fault categories. The specific flavour is "looking without seeing." Eyes move to the mirror, but nothing registers. Lesson 3 is where that gets unwound.
Incorrect use of mirrors and signals sits in the top five fail reasons nationally.
RSA marking guidelines, 2025.
What the lesson covers
8 things you leave with.
Pulled faithfully from the RSA's Lesson 3 syllabus. Each concept is a short, specific beat.
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The MSMM routine.
Mirror, interior first, then the door mirror on the side you're going. Signal, in good time. Mirror again, because the world has moved in the interval. Manoeuvre only if it's safe.
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Safety glances.
A physical head turn over the shoulder before moving off, changing lanes, or entering a new traffic stream. Not a mirror. A head check.
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Blind spots.
The area the mirrors don't cover. Most cars have bigger blind spots than new learners expect.
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Timing of signals.
Not signalling is a fail. Signalling too early confuses drivers. Signalling after the manoeuvre is pointless. Three seconds before is the default.
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Cancelling a signal.
After the turn, check it's off. Some cars self-cancel, others don't.
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Moving off from a parked position.
MSMM, head check, handbrake release, controlled clutch and accelerator. Four seconds from start to moving once it's in the hands.
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Emerging from a side road.
Peek, creep, look both ways, commit or wait. Never guess.
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Lane changes on city streets.
Not on higher-speed dual carriageways yet. City single-carriageways only at this stage.
What goes wrong in this hour
The mistakes that come up every time.
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Signalling before the mirror check.
Instinctive, but wrong. Always mirror first.
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Looking without seeing.
The eyes move, nothing registers. The most common fault on the test.
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Forgetting the blind-spot glance.
Trusting the mirror for the spot it can't cover.
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Signalling and immediately moving.
No gap for other drivers to read the signal.
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Leaving the signal on after the turn.
Confuses the traffic behind.
Practice
Quiz 1. MSMM sequence drill.
Four steps in order. Mirror, Signal, Mirror, Manoeuvre. Drag the four cards into the correct sequence.
Quiz 1 of 3
Put MSMM in the correct order.
Drag to reorder. Or focus a row, press Space to pick up, use Arrow Up and Arrow Down to move, Space to drop.
- Mirror (interior, then door on turn side)
- Signal (three seconds before)
- Mirror (check again)
- Manoeuvre (if safe)
The second mirror is the one most learners forget. That's the one that catches the late-arriving cyclist or the car that just appeared in your door mirror. The RSA added it to the routine because MSM on its own wasn't catching enough.
The hour, walked through
How Lesson 3 runs.
The lesson usually starts parked. The ADI runs MSMM verbally. Then you drive a short loop where every direction change is narrated out loud: mirror, signal, mirror, check your blind spot, off we go. Repetition is the whole mechanism. By the end of the hour the narration usually fades and the routine runs on its own.
Most ADIs pick a route for density of decisions rather than distance. A tight sequence of left turns, right turns, and side-road emerges, so that MSMM gets fired dozens of times inside one hour. The route is often four or five residential blocks looping through each other.
Blind-spot glances are introduced on move-offs from the kerb. Then on lane changes. Then on side-road emerges. Each time, the head check is named and checked by the instructor before the manoeuvre completes.
The lesson ends with the logbook stamp and upload.
Between this lesson and the next
What to practise with your Sponsor.
- Drive a looping route with at least six direction changes. Narrate MSMM aloud on each one.
- Move off from a parked position. Six times, different streets.
- Read the Rules of the Road on observation, signalling, and lane changes. Short chapters. Read them twice.
Practice
Quiz 2. Signal timing slider.
Too early and drivers think you're turning somewhere you're not. Too late and they can't react. Drag the marker.
Signal-timing slider quiz. Coming in the next release.
Three seconds before the turn is a working default. On a busy road it can stretch to five. On a quiet lane, two is fine.
Pairs with the theory test
What this lesson overlaps with on paper.
Practice
Quiz 3. Blind-spot hotspot game.
The mirrors don't cover everything. Click where they don't.
Blind-spot hazard-spot. Coming in the next release.
The left-shoulder blind spot is where the cyclist lives. Most close passes in Dublin happen because the driver did a left-turn without a blind-spot glance. The glance takes half a second. The court case takes a year.
Around Lesson 3
Keep going.
All twelve EDT lessons
- 01 Car Controls and Safety Checks
- 02 Correct Positioning
- 03 Changing Direction
- 04 Progression Management
- 05 Positioning, More Complex Situations
- 06 Anticipation and Reaction
- 07 Sharing the Road
- 08 Driving Safely Through Traffic
- 09 Changing Direction at Volume
- 10 Speed Management
- 11 Driving Calmly
- 12 Night Driving
Book it
Ready for this one?
Lesson 3 is sixty minutes. Book it any time after Lesson 1. Most learners take it in the first month because MSMM is the observation habit the next eleven lessons build on.
Dublin pickup, D1 to D18. Dual controls. Logbook stamped and uploaded within ten working days.