RoundaboutCanada

Learn traffic rules with clear explanations and visual examples in our illustrated book, designed to make studying simple and engaging.


16. Roundabout

A roundabout is a circular road arrangement in which traffic travels around a central island in one designated direction. Vehicles enter and leave through connecting roads, and traffic signs or local rules determine who has priority.

Drivers should reduce speed, choose a suitable lane, observe all road users and signal as required when leaving. The direction of travel, entry priority, lane use and rules for cyclists and pedestrians depend on local traffic signs and regulations.

Roundabout sign at the junction of Alberta highways 633 and 44 near Villeneuve. (Alberta, Canada)
Wikimedia.org • formulanone • CC BY-SA
What is a roundabout?

A roundabout is a circular road arrangement where traffic travels in one direction around a central island before leaving through the chosen exit.

How can you recognise a roundabout?

A roundabout is normally identified by a circular-direction sign, a central island and entry roads controlled by signs, markings or local priority rules.

Which direction does traffic travel around a roundabout?

The direction depends on the country’s driving side. Traffic normally travels anticlockwise in right-hand-traffic countries and clockwise in left-hand-traffic countries.

Who has priority at a roundabout?

Priority differs between countries and roundabout designs. Entering traffic commonly gives way to traffic already circulating, but drivers must always follow the actual priority signs and signals.

Must you stop before entering a roundabout?

Not always. Stop when required by a stop sign, traffic light or approaching priority traffic. Otherwise, reduce speed and enter only when there is a safe gap.

Does a roundabout always have a give-way sign?

No. The sign arrangement depends on local law. Some circular intersections use ordinary priority rules or traffic lights instead.

How should you approach a roundabout?

Reduce speed, observe the signs and markings, choose the appropriate lane and check for pedestrians, cyclists and circulating traffic.

Which lane should you choose?

Follow the lane arrows and destination signs. As a general guide, use the lane appropriate for your exit, but exact lane-selection rules differ between countries and roundabout layouts.

May you use an inner lane?

Yes, where the road layout and local rules permit it. Before leaving, change lanes safely and give way to road users already travelling in the lane you wish to enter.

Do you need to signal when entering?

This depends on local law. Some countries require a signal for particular exits, while others require no signal when entering.

Do you need to signal when leaving?

Usually, yes. Signal in the direction of the exit early enough to inform other road users, but not so early that your intention becomes misleading.

Does signalling give you priority?

No. A direction indicator communicates your intention but does not permit you to force another road user to brake or change direction.

May you change lanes on a roundabout?

Only when the lane markings permit it and the manoeuvre can be completed safely. Check mirrors and blind spots, signal where required and give way to traffic already in the target lane.

What should you do if you miss your exit?

Continue around the roundabout and approach the exit again. Do not stop, reverse or cut suddenly across another lane.

May you drive over the central island?

Normally not. Some small roundabouts have a mountable central section intended only for vehicles that cannot otherwise negotiate the road safely.

Do cyclists have priority at a roundabout?

Priority depends on whether cyclists use the carriageway, a continuing bike path or a separate cycle crossing. Drivers and cyclists must follow the signs, markings and local priority rules.

What should drivers check before leaving?

Check mirrors and blind spots for cyclists, mopeds, motorcycles and vehicles beside you. Also check for pedestrians crossing the exit road.

Do pedestrians have priority at roundabout exits?

Pedestrian priority depends on crossings and local law. Drivers should approach exits slowly and be prepared to yield to pedestrians crossing or about to cross.

Does a roundabout have a special speed limit?

Not universally. The posted or general road limit applies, but drivers must travel slowly enough to negotiate the roundabout safely.

May you overtake on a roundabout?

Passing another vehicle may be permitted on a multilane roundabout, but drivers must remain within their lane and avoid unsafe lane changes. Local overtaking restrictions may apply.

May you stop or park on a roundabout?

Follow local signs and parking rules. Stopping or parking on the circulating roadway is commonly prohibited or unsafe because it obstructs traffic and reduces visibility.

Is every circular intersection a roundabout?

No. A circular junction may be governed by traffic lights, ordinary priority rules or another road design. Its legal status depends on its signs and local definition.

1 Canada 2 Motorway 3 Speed limit 4 Advisory speed 5 Bike path 6 Pedestrian warning 7 Bridge 8 Speed bump 9 Toll road 10 One-way traffic 11 Bus lane 12 Bus stop 13 Dead end 14 Stop sign 15 Give way 16 Roundabout 17 Road narrowing 18 Pedestrian crossing 19 Railway crossing 20 Mandatory direction 21 Turn prohibition 22 School area 23 Crossing animals 24 Slippery road 25 Rockfall 26 Curve 27 Wrong-way driving 28 Roadworks 29 Height limit 30 Weight limit 31 Radar speed sign 32 Selective barriers 33 Priority at the next junction 34 Traffic lights 35 Traffic lights warning 36 Pedestrian lights 37 All-way stop 38 Emergency telephone 39 No parking 40 No stopping 41 Parallel parking 42 Disabled parking 43 Traffic management 44 Reversing 45 U-turn 46 Detour 47 Uncontrolled crossroad 48 Road surface 49 Emergency lane 50 Provisional licence 51 City limit 52 Road closed 53 Licence plate 54 Charging station 55 Pedestrian 56 Bus 57 Police 58 Ambulance 59 Taxi 60 Tailgating 61 Pothole 62 Path 63 Particulates 64 Air pollution 65 Rush hour 66 Road code 67 Reversible lane 68 Street gutter 69 Cargo bike 70 Forestry vehicle 71 Construction vehicle 72 Semi-trailer truck 73 Trolleybus 74 Speed pedelec 75 Delivery vehicle 76 Idling 77 Tow truck 78 Four-wheel drive 79 Bicycle 80 Motorcycle equipment 81 Rail track 82 Caravan 83 Trailer 84 Tow hitch 85 Fire truck 86 Siren 87 Convoy 88 Emergency vehicle lighting 89 Agricultural machinery 90 Electric bicycle 91 Electric vehicle 92 Pedelec 93 Quadricycle 94 Microcar 95 All-terrain vehicle 96 Van 97 Recreational vehicle 98 Scooter 99 Trikke 100 Personal mobility device ...