A tram line runs on my street. There'e a junction right in front of my window and every now and then one of the streetcars derails. The speed is always very low so there is absolutely no risk for passengers, etc. Most of the time only one of the wheels jumps off the tracks and the car just has to reverse to get it back on.
This time it took almost 1.5 hours to fix the problem (luckily the road is closed due to roadwork so there were no traffic delays except for the streetcars on that route). I took several pictures of which only a few came out ok. This one was taken during the last test run after the 'repair':