On April 27, 2016, I was visiting Bordeaux, France with my father Richard Jay Solomon. I made this view using my Lumix LX7 of a Bordeaux Tram crossing the river Garonne.
The Bordeaux tram system makes extensive use of a ground based electrical power distribution system to avoid the necessity for overhead wires. To minimize the danger of electrocution this system is designed so the positive feed is only activated when the tram is over the individual hot feeds.