Excellent photo, and a vary rare opportunity to make it - many thanks )

This was (and is) only possible:

1. with a special journey
2. a very good organisation (leaving a gap before the regular tram comes)
3. as point 2 for the position of the sun
4. A high level of patience is required from the driver and participants.

All kind of traffic (cars, bikes...) comes from all the directions and stops also on a traffic light, just before the tram. But when you've enough time, then on a magic moment the street is empty - for just a couple of seconds...
To give an idea: we left on the Koningin Astridplein after a regular tram and when the photo was made, we made the departure just over the crossing and then the next regular tram cames. It took a very long time before this shot was possible.