Right-of-Way, Junctions and Roundabouts
Right-of-way rules exist to make junctions predictable. At a give-way line you must let traffic on the main road pass before emerging. At a stop sign you must come to a complete halt, then proceed only when clear. At an unmarked junction, treat it with caution and be ready to yield to traffic already on the crossing road; never assume priority simply because you arrived first.
Roundabouts in Bahrain are common and follow a clear pattern. Traffic already circulating on the roundabout has priority. You approach, give way to the right where circulating vehicles come from, and enter when there is a safe gap. For a first exit, keep to the right-hand lane (Bahrain drives on the right). For intermediate exits, use the outer lane unless markings direct otherwise. For the final or a later exit, use the left-hand lane and move outward after passing the exit before yours, signalling left as you leave.
Traps in questions include: assuming you must always give way to the right at every junction; confusing a roundabout's circulating priority with a general right-hand rule; and forgetting that a vehicle already signalling to leave a roundabout may still be circulating. Another trap is the vehicle entering from a slip road, which must give way to traffic already on the main carriageway.
Worked example: you approach a four-arm roundabout intending to take the third exit. You take the left-hand lane on approach, signal right, give way to circulating traffic, enter, keep signalling right while passing the first and second exits, then signal left after passing the second exit, check your mirrors and blind spot, and move to the outer lane to leave. If you miss the exit, continue around rather than cutting across lanes.
Rule of thumb: circulating traffic first, signal your intention early, and never change lanes on a roundabout without checking.