In cases of breakdown, must you immediately remove the vehicle from the crossing and if this is not possible, should you warn the engine driver of the rail vehicle?

Why?

The photo shows a railway level crossing with barriers. If your vehicle breaks down on the crossing, you must remove it immediately to prevent a collision with a rail vehicle. If that is impossible, you must warn the rail vehicle’s driver of the danger.

art. 28 ust. 4 Prawa o ruchu drogowym