Roundabout with a tram and a cyclist after rain
You approach a large signalised roundabout in Sofia in daylight after heavy rain. The road surface is wet, with standing water in the right-hand lane near the kerb. You intend to take the third exit (straight ahead, roughly 180 degrees around the island). On your right, a cyclist in dark clothing with no lights is riding in the cycle lane that merges into your lane about 30 m before the give-way line. Ahead, a tram is approaching the roundabout from your left on its own raised track, and the tram signal shows a horizontal bar. The traffic lights for your direction show green, but the exit you want is 60 m beyond the roundabout and there is a queue of cars stationary across it, blocking the far side. A pedestrian with a child is waiting at a zebra crossing 15 m after the roundabout exit. Your speed is 45 km/h; the wet stopping distance is longer than on dry tarmac.
1. How should you manage speed and position on the approach, taking the cyclist and the wet surface into account?
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Approach plan:
- Reduce speed early, to around 20-25 km/h well before the give-way line, braking gently and progressively on the wet surface; avoid sudden steering or braking on standing water because of aquaplaning risk.
- Do not overtake the cyclist into the merge point. The cycle lane ends 30 m before the line, so the cyclist must either join your lane or be given room. Hold back, let the cyclist establish position ahead of you or clearly behind, and leave at least 1.5 m when passing if you do pass.
- Move out of the right-hand lane where water is standing; the deeper water is near the kerb and the cyclist is there too. Use the centre of your lane, but check mirrors and blind spot before changing position.
- Signal right only after passing the exit before yours, and keep left of the central island markings.
Reasoning: the wet surface lengthens stopping distance and reduces grip, so the approach speed must be lower than in dry conditions; the cyclist is vulnerable and unlit, so the driver must compensate by giving space and time rather than relying on being seen.
2. The lights are green but the exit is blocked by stationary traffic. What do you do, and how does the tram affect your decision?
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Exit blocked:
- A green light does not authorise entering the roundabout if you would have to stop within it and block the junction. Because the queue stands across your exit, you should wait before the give-way line (or before the circulating carriageway) until there is room to clear the roundabout completely.
- Stopping inside the roundabout would block circulating traffic and possibly the tram track, which is a serious hazard.
Tram:
- The horizontal bar on the tram signal means the tram must stop, so it does not have priority to enter at this moment. However, trams are rail vehicles that cannot steer or stop quickly, and their signals can change; you should not rely on the tram remaining stopped. Keep the tram track clear and do not enter the circulating carriageway in a way that would leave your vehicle across the rails.
- Trams generally have priority at roundabouts where they cross; if the tram begins to move, you must yield.
So: hold back, keep the crossing and the tram track clear, and enter only when you can leave the roundabout without stopping.
3. After you finally exit, what must you do about the pedestrian crossing and the queued traffic?
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After the exit:
- The zebra crossing is only 15 m beyond the exit and a pedestrian with a child is waiting. You must approach at a speed from which you can stop, and give way as soon as the pedestrian shows an intention to cross or steps onto the crossing. On a wet road 15 m is very short, so speed must already be low at the exit, not built up.
- Do not enter the crossing area if the traffic beyond it is stationary and you would stop on the zebra markings; that obstructs the crossing and is prohibited. Leave the crossing clear even if it means waiting before it.
- Watch the child: children may step out unpredictably, so be prepared to stop fully and do not sound the horn aggressively.
- Keep an eye on the cyclist who may have crossed with you and could be continuing along the road; do not cut across the cycle path or the crossing.