As I approached the bike store, I saw some people working on a trolley bus, the kind that draws power from overhead wires. Then, while I was locking it to a pole, the mechanic walked over and climbed up to the top of the bus. I’d never noticed that trolley buses have built-in ladders.
This is probably easier than designing a place to stow a ladder inside the bus, and it doesn’t require any extra clearance the way a ladder would. That probably makes it safer. I don’t recall seeing any warning signs for the climber, though.
It took me by surprise to see the mechanic climb up the side of the bus, or I’d have take a photo of him climbing!