Will the vehicles drive through the intersection in the following order?

Explanation

The red car, then the tram simultaneously with the green car.

The light on the side of the tram and the green car shows the main red lamp lit, and only the additional section glows with a green arrow pointing upwards; the red car is passing unimpeded on the crossing road. So both vehicles moving on the arrow must first give priority to the red car and only then enter.

Why do the tram and the green car go simultaneously? Because they have no conflict with each other: the tram goes straight on its own rails and the green car goes straight too, in the lane beside the rails. Their paths are parallel, not crossing; and because both are moving on one and the same signal, neither takes precedence over the other.

Two traps are set simultaneously in this question. The first is the yellow diamond (priority road) on the same post; as long as the traffic light is working, the priority signs have no effect and the light has the last word. The second is the tram's supposedly permanent precedence; a tram moving on the arrow of an additional section does not have that precedence and, like everyone else, must give way. The safety logic is the same: the arrow of an additional section does not stop the traffic that has a full green, so whoever enters on the arrow is obliged to see the junction clear.

• This order is built on "the tram always first"; but the tram is moving on the arrow of an additional section and must give way to the red car, so it cannot be first. • It is true that the tram and the green car go simultaneously, but not before the red car; their main light is red and priority belongs to the traffic in the crossing direction.

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