Vehicles will drive through the intersection in the following order:

Explanation

Red, green, blue, black.

The yellow diamond with its direction plate is posted beside the red car. That means the priority road comes from the red car's side, turns at the junction and goes into the road on which the green lorry stands. So red and green are on the priority road; the blue car and the black car are on the minor road, and the stop sign on the right of the picture belongs to that same minor entry.

The first stage is settled between the two priority-road vehicles: the red car is on the green lorry's right, so green must wait; red first, green second. The second stage is between the two minor-road vehicles, and again the right-hand rule works: the blue car is on the black car's right, so blue third and black fourth. The black driver, besides giving way, is obliged to stop completely before the stop line, not merely to slow down.

Safety point: the priority road turning makes the priority-road cars' path run across the middle of the junction and block the minor-road drivers' view; if the minor road enters first, the collision happens in the junction's blind spot. To memorise, keep the two stages separate: first all the priority-road vehicles, then all the minor-road vehicles, and within each group the right-hand rule.

• This order puts the green lorry ahead of the red car; but both are on the priority road and red is on green's right, so green must give way. • This again puts green first. The order of the two minor-road vehicles in this option is correct, but that single swap of the two priority-road vehicles makes the whole answer wrong.

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