The green arrow is pretty common in former-Soviet areas (Dresden is near the Czech border). Usually it's used at crossroads, so if the crossing lane is clear or

The green arrow is pretty common in former-Soviet areas (Dresden is near the Czech border). Usually it's used at crossroads, so if the crossing lane is clear or not busy you can still turn right without being held up. Here is a good example near me: https://www.google.lt/maps/@54.7056651,25.3040075,3a,75y,99.24h,88.49t/data=!3m6!1e1!3m4!1sQHL6lSlyl7sASzlW9JgvSQ!2e0!7i13312!8i6656?hl=en https://www.google.lt/maps/@54.7056651,25.3040075,3a,75y,99.... (And if you go forward two steps the Google car goes through the red light :D) If you aren't used to it you need to be careful though, as often the street you are turning into is green for pedestrians to cross - so you need to give way. Usually you can use this lane if you are going straight, so it's somewhat courteous to go over one lane and not to block it.