Theory Mastery

Traffic-jam behaviour and breakdowns: clearing space and getting yourself to safety

What the exam asks here: Most students think: 'hazard lights on as soon as you are in the jam, off once the jam clears again'.

14 minutes · 7 sections · 14 questions

The trap

Many learners think: In a traffic jam you must always make room for emergency services according to a fixed formation, the far-left lane moving left, the rest moving right.

The rule is: The book only requires that you make room for emergency services when there is no hard shoulder; a fixed left/right formation is not part of this teaching material

Challenge

Most students think: 'hazard lights on as soon as you are in the jam, off once the jam clears again'. But the book ties the lights to two very different moments — your own moment of surprise, and the reaction moment of the driver behind you — not to the duration of the whole jam.

Read this section on its own page: Challenge: Traffic-jam behaviour and breakdowns: clearing space and getting yourself to safety

The model

In a traffic jam (Book p.167): no lane changes, keep distance, leave room for filtering motorcyclists, engine off when stationary for a long time, stay in the car, follow traffic information. Hazard lights go on when you come to a stop in the jam, and go off again once the vehicles behind have slowed down. In a breakdown (Book p.168): as far right as possible, exit on the right, safety vest, wait behind the crash barrier, call roadside assistance with your location via the hectometre marker.

Read this section on its own page: The model: Traffic-jam behaviour and breakdowns: clearing space and getting yourself to safety

Core

In a traffic jam six behaviour rules apply at once (Book p.167): you do not change lanes, you keep your distance, you leave room for motorcyclists filtering between the rows, you switch off the engine when stationary for a long time, you stay in the car, and you follow traffic information via the radio or navigation. The hazard lights follow their own timing, separate from the length of the jam: they go on the moment you unexpectedly come upon the jam, and go off again once the vehicles behind have slowed down or noticed — not for the whole jam. On the rescue corridor, the book states only the general duty: if there is no hard shoulder, you clear space for emergency services. A fixed formation (for example 'left lane goes left, the rest goes right') is not part of this teaching material — you apply the general duty to whatever situation arises, without a memorised pattern. In a breakdown on the road, the order is: as far right as possible, preferably the verge; exit on the right; put on the safety vest; wait behind the crash barrier; and call roadside assistance with your location using the hectometre marker — the small sign with distance and road number along the hard shoulder.

Read this section on its own page: Core: Traffic-jam behaviour and breakdowns: clearing space and getting yourself to safety

Why it matters

Filtering motorcyclists deliberately use the space between lanes so they do not get stuck themselves — suddenly changing lanes hits them hardest. In a breakdown, exiting on the right, behind the crash barrier, is precisely because the carriageway side of a stationary car on the hard shoulder is the side where passing traffic would hit you first.

Read this section on its own page: Why it matters: Traffic-jam behaviour and breakdowns: clearing space and getting yourself to safety

Active recall

On the A29 near Numansdorp traffic is jammed solid across three lanes; there is no hard shoulder. What does the book require of you?

Read this section on its own page: Active recall: Traffic-jam behaviour and breakdowns: clearing space and getting yourself to safety

Teach back

Explain: when do the hazard lights go on and off again in a traffic jam, and what does the book exactly require of you when there is no hard shoulder for emergency services?

Read this section on its own page: Teach back: Traffic-jam behaviour and breakdowns: clearing space and getting yourself to safety

Memory hook

Hazard lights: on when startled, off once the driver behind you slows — not for the whole jam. Rescue corridor: clear space, no fixed pattern. Breakdown: right, vest, crash barrier, hectometre marker.

Read this section on its own page: Memory hook: Traffic-jam behaviour and breakdowns: clearing space and getting yourself to safety

Source: RVV 1990 art. 10 · RVV 1990 art. 43 · checked 2026-10-22

The picture

Traffic-jam behaviour versus breakdown procedure: two checklists, one roadIn a traffic jam (p.167)In a breakdown (p.168)Positionno lane changes, keep distanceas far right as possible, preferably the vergeWhat you do yourselfengine off when stationary for a long time, stay in the car, follow traffic infoexit on the right, put on the safety vest, wait behind the crash barrierSignal/reporthazard lights on when stopping, off once the vehicle behind slowscall roadside assistance, location via the hectometre markerEmergency servicesclear space when there is no hard shoulder — no fixed formation in this materialn/a
What to look at: Traffic-jam behaviour: no lane changes, distance, room for motorcyclists, engine off, stay in car, traffic info, hazard lights on when stopping/off once the vehicle behind slows. Breakdown: right/verge, exit right, vest, behind crash barrier, call with hectometre marker.

Signs and law

Test yourself

On the A16 near Zwijndrecht traffic suddenly comes to a stop. In your rear-view mirror you see the cars behind you also slowing down. What do you now do with your hazard lights?

Show the answer

In a traffic jam (Book p.167): no lane changes, keep distance, leave room for filtering motorcyclists, engine off when stationary for a long time, stay in the car, follow traffic information. Hazard lights go on when you come to a stop in the jam, and go off again once the vehicles behind have slowed down. In a breakdown (Book p.168): as far right as possible, exit on the right, safety vest, wait behind the crash barrier, call roadside assistance with your location via the hectometre marker.

Exam questions on this topic

On the A16 near Zwijndrecht traffic is jammed solid across three lanes; there is no hard shoulder. Behind you an ambulance approaches with flashing lights and siren. What do you do?

  1. You move over where you can, so that the ambulance can get through
  2. You switch to the lane that is still moving a bit faster
  3. You wait until the rows form the fixed left/right formation
Show the answer

Correct answer: You move over where you can, so that the ambulance can get through

False — you look for a faster lane. In a jam you do not change lanes, even if another lane seems faster; without a hard shoulder you clear space for the emergency service

Why learners get this wrong: In a traffic jam you may change lanes if another lane is clearly moving faster.

Open this question

On the A15 near Vianen you unexpectedly come upon a traffic jam and switch on your hazard lights. Statement: you keep them on until the jam has fully cleared.

  1. True
  2. False
Show the answer

Correct answer: False

Why learners get this wrong: Once you are in a traffic jam, you keep the hazard lights on for as long as you are stationary.

Open this question

On the A29 near Numansdorp your engine cuts out. You just manage to roll onto the hard shoulder; traffic is racing past next to you. What do you do now?

  1. Get out on the right, vest on, call roadside assistance from behind the barrier and only name the motorway
  2. Get out on the right, vest on, call roadside assistance from behind the barrier using the hectometre marker
  3. Stay in the car with my seatbelt on and call roadside assistance from my seat until they arrive
Show the answer

Correct answer: Get out on the right, vest on, call roadside assistance from behind the barrier using the hectometre marker

False — You only give the road. Also give the number on the hectometre marker beside the hard shoulder, so roadside assistance knows exactly where you are

Why learners get this wrong: When calling roadside assistance, you only need to say which motorway you are on; they will find the exact location themselves.

Open this question

Which of these actions are part of correct traffic-jam behaviour according to the book? (select all correct; Book p.167)

  1. Not changing lanes
  2. Switching off the engine when stationary for a long time
  3. Keeping distance from the car in front of you
  4. Leaving room for filtering motorcyclists
  5. Briefly getting out to see how much longer the jam will last
Show the answer

Correct answer: Not changing lanes; Switching off the engine when stationary for a long time; Keeping distance from the car in front of you; Leaving room for filtering motorcyclists

Why learners get this wrong: In a long traffic jam you may briefly get out to see what is going on.

Open this question

You have broken down on the hard shoulder of the A58 near Roosendaal and call roadside assistance. They ask exactly where you are. What do you say?

  1. The road number and the estimated distance to the last exit I passed
  2. Only the road number; roadside assistance will look up the exact spot themselves
  3. The road number and the number on the nearest hectometre marker
Show the answer

Correct answer: The road number and the number on the nearest hectometre marker

False — You leave out the exact spot. Give your location with the number on the hectometre marker along the hard shoulder; then help finds you precisely

Why learners get this wrong: With a breakdown it is enough to give the estimated distance to the last exit; you still roughly know that.

Open this question

On the N57 near Zierikzee you are stuck in a traffic jam. Statement: if a neighbouring lane is clearly moving faster, you may change into it.

  1. True
  2. False
Show the answer

Correct answer: False

Why learners get this wrong: In a traffic jam you may change lanes if another lane is clearly moving faster.

Open this question

About Traffic-jam behaviour and breakdowns: clearing space and getting yourself to safety: which statement is correct?

  1. The hazard lights go on when you come to a stop in the jam and go OFF again once the vehicles behind have slowed or noticed — not for the whole jam.
  2. When calling roadside assistance, you only need to say which motorway you are on; they will find the exact location themselves.
  3. In a traffic jam you must always make room for emergency services according to a fixed formation, the far-left lane moving left, the rest moving right.
Show the answer

Correct answer: The hazard lights go on when you come to a stop in the jam and go OFF again once the vehicles behind have slowed or noticed — not for the whole jam.

The hazard lights go on when you come to a stop in the jam and go OFF again once the vehicles behind have slowed or noticed — not for the whole jam

Why learners get this wrong: When calling roadside assistance, you only need to say which motorway you are on; they will find the exact location themselves.

Open this question

About Traffic-jam behaviour and breakdowns: clearing space and getting yourself to safety: which statement is WRONG?

  1. The book only requires that you make room for emergency services when there is no hard shoulder; a fixed left/right formation is not part of this teaching material.
  2. In a breakdown you do get out: on the right, wearing a safety vest, waiting behind the crash barrier. 'Stay in the car' applies to stationary traffic-jam traffic, not to a breakdown on or next to the hard shoulder.
  3. Once you are in a traffic jam, you keep the hazard lights on for as long as you are stationary.
  4. You report your location using the hectometre marker, the small sign with distance and road number along the hard shoulder.
Show the answer

Correct answer: Once you are in a traffic jam, you keep the hazard lights on for as long as you are stationary.

The hazard lights go on when you come to a stop in the jam and go OFF again once the vehicles behind have slowed or noticed — not for the whole jam

Why learners get this wrong: In a traffic jam you must always make room for emergency services according to a fixed formation, the far-left lane moving left, the rest moving right.

Open this question

About Traffic-jam behaviour and breakdowns: clearing space and getting yourself to safety: which statement is correct?

  1. The rule is: do not change lanes in a traffic jam, regardless of an apparently faster neighbouring lane.
  2. Once you are in a traffic jam, you keep the hazard lights on for as long as you are stationary.
  3. In case of a breakdown on the motorway, it is best to stay in the car until roadside assistance arrives, just as in a traffic jam.
  4. In a traffic jam you must always make room for emergency services according to a fixed formation, the far-left lane moving left, the rest moving right.
Show the answer

Correct answer: The rule is: do not change lanes in a traffic jam, regardless of an apparently faster neighbouring lane.

The rule is: do not change lanes in a traffic jam, regardless of an apparently faster neighbouring lane

Why learners get this wrong: Once you are in a traffic jam, you keep the hazard lights on for as long as you are stationary.

Open this question

About Traffic-jam behaviour and breakdowns: clearing space and getting yourself to safety: which statement is WRONG?

  1. The book only requires that you make room for emergency services when there is no hard shoulder; a fixed left/right formation is not part of this teaching material.
  2. The hazard lights go on when you come to a stop in the jam and go OFF again once the vehicles behind have slowed or noticed — not for the whole jam.
  3. In a traffic jam you may change lanes if another lane is clearly moving faster.
  4. In a breakdown you do get out: on the right, wearing a safety vest, waiting behind the crash barrier. 'Stay in the car' applies to stationary traffic-jam traffic, not to a breakdown on or next to the hard shoulder.
Show the answer

Correct answer: In a traffic jam you may change lanes if another lane is clearly moving faster.

The rule is: do not change lanes in a traffic jam, regardless of an apparently faster neighbouring lane

Why learners get this wrong: In a traffic jam you must always make room for emergency services according to a fixed formation, the far-left lane moving left, the rest moving right.

Open this question

All practice questions of this topic

Frequently asked questions

‘In a traffic jam you must always make room for emergency services according to a fixed formation, the far-left lane moving left, the rest moving right’ – is that true?

No. The book only requires that you make room for emergency services when there is no hard shoulder; a fixed left/right formation is not part of this teaching material

‘Once you are in a traffic jam, you keep the hazard lights on for as long as you are stationary’ – is that true?

No. The hazard lights go on when you come to a stop in the jam and go OFF again once the vehicles behind have slowed or noticed — not for the whole jam

‘In case of a breakdown on the motorway, it is best to stay in the car until roadside assistance arrives, just as in a traffic jam’ – is that true?

No. In a breakdown you do get out: on the right, wearing a safety vest, waiting behind the crash barrier. 'Stay in the car' applies to stationary traffic-jam traffic, not to a breakdown on or next to the hard shoulder

‘When calling roadside assistance, you only need to say which motorway you are on; they will find the exact location themselves’ – is that true?

No. You report your location using the hectometre marker, the small sign with distance and road number along the hard shoulder

‘In a long traffic jam you may briefly get out to see what is going on’ – is that true?

No. In the jam you stay in the car; you follow traffic information via the radio/navigation, not by getting out

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