In this situation, are you prohibited from overtaking the preceding vehicle on its left?

Explanation
Correct answer: No
No, in this situation there is no ban on overtaking on the left. The photo shows a two-lane motorway with a sign announcing the end of the motorway in 1000 m. The carriageway has two lanes in the same direction. Overtaking on the left is the standard and correct way to overtake. There is no ban on overtaking on the left on a motorway or an expressway with marked lanes.