In this situation, is the driver of vehicle 1 obliged to drive as close as possible to the left edge of the lane?

The video shows a diagram of a roadway with three lanes in the same direction, in a traffic jam; a fire engine is approaching from behind. The driver of vehicle no. 1, which is in the far left lane, is obliged to move as close as possible to the left edge of the lane. The answer is: yes.

The Road Traffic Act states that when heavy traffic makes it difficult for an emergency vehicle to pass freely, on a roadway with more than two lanes in the same direction, a driver in the far left lane is obliged to get out of its way by moving as close as possible to the left edge of the lane, and drivers in the other lanes - by moving as close as possible to the right edge of their lanes. This creates an emergency corridor between the far left lane and the lane next to it, through which an ambulance or a fire engine can pass. Vehicle no. 1 is in the far left lane, so it moves to the left, towards the barrier or the central reservation; vehicles in the middle and right lanes move to the right. You must not use the corridor for your own driving, and after the emergency vehicle has passed, you return to your lane.

Legal basis: Art. 9 para. 2 point 2 and point 1 and para. 3 of the Road Traffic Act (Prawo o ruchu drogowym)