Is it permitted on a one-way road to overtake a rail vehicle from the left?

On a one-way roadway, overtaking a rail vehicle on its left side is permitted. The answer is: yes. The general rule is to overtake a tram on the right, but the Road Traffic Act provides two exceptions to it - when the position of the tracks makes overtaking on the right impossible, and when the overtaking takes place on a one-way roadway.

The Road Traffic Act states that a rail vehicle may be overtaken only on the right, unless the position of the tracks makes such overtaking impossible or the overtaking takes place on a one-way roadway. A tram usually runs in the middle of the roadway, so overtaking it on the left on an ordinary two-way road would mean driving into the lane for oncoming traffic - that is why the rule is the right side. On a one-way roadway there is no oncoming traffic on the left of the tracks, so the danger disappears and you may choose the side where there is more space. Whichever side you choose, the normal conditions for overtaking apply: you make sure that you have space and visibility and that nobody is overtaking you, and you remember that a tram may stop at a tram stop, and passengers getting off have right of way when they cross the roadway to the pavement.

Legal basis: Art. 24 para. 3 and 4 of the Road Traffic Act (Prawo o ruchu drogowym)