What do you mean sub branding?

The first batch of ‘Voltra’ simply feature route numbers and a few destinations on the side. There’s no route name on them (and I’ve personally never heard them announce a route name when the doors close), whereas this second batch are branded QuayCity.

Voltra seems to simply be their name for their electric vehicles, rather than a route brand, from what I gather anyway.


Also interesting Voltras seem to have their route numbers on the sides, alongside the main stops, whereas on non electric route branding there are no route numbers, so when they’re covering other routes unfamiliar passengers wouldn’t realise the list of stops within the livery aren’t applicable to that service.