My view based on our Europe Trip with other correcting me or adding to my posting.
How many buses have been lost due to engine fires in diesel buses that have been around for decades???
I saw 4 types of charging stations that were setup at the end of routes or at the main terminal and they were all different types. They were power with either attachment dropping from the top to the bus roof or a bracket going up to the charger. There were a few others, but no idea where they charger or how or when. 5 minutes was the longest time I saw for charging.
Rome: Unknown with a small amount and the removal of the OS for trolley buses from the train station as well the routes to it. Buses are duel power and run on battery with some routes not going to the train station anymore. Was going to take a ride on the trolley bus, but never made it as I wanted to see where the OS begin/end.
Milano: Attachment comes down to the bus and only saw a few of them at different locations for 40' buses. 100% trolley buses on the OS still exist.
Zurich: Trolley buses still exist with 40' and 60' E buses of unknow charging or where.
Stockholm: Only a few buses and no idea for charging with most 60' being hybrid.
Copenhagen: Charging take place at the end of the route for all 60' buses and a fair number of 40's at the end of the route. Backet comes down from the top.
Hamburger: Small number of 40's and 60's and no idea for charging or where.
Frankfurt: Airport buses are charge unknown as well local buses that was a small number that were mainly 60's.
Amsterdam: All 60's charge from the top the top of buses at the end of the route or train station with a bracket. The bracket goes up to a V bracket like trolley buses found in Boston and SF that have duel buses.
Rotterdam: All 1400 and 1500 series 40's buses charge at the train station that I saw.
Brussels: Small amount of 40's and 60's buses that I saw and unknown how or where charge, but could be plug in.
Paris: Only saw a few buses as well hybrid with mostly still diesel of all things and unknown for charging or where.
Bulk of buses are mainly 60's with some 40's and 45's buses. Saw next to no double deck buses in cities that I saw in 2010 where DD were standard fleet buses.
While post photos and videos once I get to them since I am real back log before going away and the 5,000 I shot on the trip. Had no time to work on them this trip like I did in 2010.
Personally, TTC and other system should have charging stations at terminals in the layover area or at the stop to keep buses on route longer than deadhead to/from the garage for charging. Deadheading is costly.
The first on street charging I every saw was in Louisville KY around 2014 on the street at the end of the test route. Still exist as well a few other routes as of 2019 that are mainly 40'.