Right of Way at Junctions and Roundabouts: Singapore BTT Guide
One of the most common places learner drivers lose marks in the Basic Theory Test is right of way. It sounds simple on paper, but under exam pressure many candidates freeze when a question describes a junction with no traffic lights and no signs. This guide walks through the core rules the Traffic Police expect you to know.
The Give Way Rule at Uncontrolled Junctions
When there are no traffic lights, no stop signs and no give way signs at a junction, the rule is simple but often misunderstood. Traffic already on the road you are entering has priority. If you are joining a road from a side road, you must give way to vehicles already travelling on that road, even if you arrived at the junction first.
A frequent trap in exam questions is the assumption that the vehicle going straight always has priority. That is not always true at an uncontrolled junction. Read every question carefully and identify which vehicle is already on the through road before you answer.
Roundabouts
At a roundabout, traffic already circulating has the right of way. Vehicles entering the roundabout must give way to traffic already on it, approaching from the right. Signal left as you approach your exit so following drivers know your intention, and always check your mirrors and blind spot before committing to a lane change on the roundabout itself.
Yellow Box Junctions
A yellow box junction is marked with crisscross yellow lines. You must not enter the box unless your exit is clear. If you enter and then get stuck because traffic ahead has stopped, you are blocking the junction, which is an offence even if you did not intend to stop there. Plan ahead, especially in heavy traffic, and hold back if you cannot see a clear path through.
Why This Connects to Lane Positioning and Overtaking
Right of way rules rarely exist in isolation. The lane you are in as you approach a junction, and whether you are in the middle of an overtaking manoeuvre, directly affects who has priority and how safely you can react. If you want a deeper breakdown of correct lane positioning, signalling and safe overtaking distances, our guide on lane discipline and overtaking rules for the Basic Theory Test pairs well with the topics covered here, and both categories tend to appear together in exam scenario questions.
How to Practise This Topic
Reading the rules once is rarely enough. Right of way questions in the real BTT are almost always scenario based, describing a junction layout and asking what you should do. The best way to prepare is to practise as many scenario questions as possible until identifying priority becomes automatic rather than something you have to work out under time pressure.
You can practise this category, along with every other BTT and FTT topic, completely free on our platform. Choose the relevant category from the homepage, or try a full Exam Simulation for a timed, 50 question mock test that mirrors the real exam experience.
Good luck, and drive safe.