Because honestly, trolleybusses are nothing more than 'fancy busses with overhead wires', so people should decide by unlocking the bus, whether they want to set up a classic bus or tram network or a fancy DLC trolleybus network. I think that trolleybusses should be unlocked at the same point in the game where one also unlocks the normal busses. They are not more quieter or something like that, so biofuel busses do the same job. And the fact that trams are unlocked before the trolleybus makes it even worse, because then one has already established a tram network which makes it harder to establish a trolleybus network, because whenever you cross a tram route, you need to build over- or underpasses. THEY CANNOT CROSS OVER WITH TRAMS!!! This is by far the biggest downsite, as nearly all of my cities (1200+ hours of experience) rely on trams (for local transport to the next hub, or for the cities infant stages). They only have the same capacity as normal busses. They need dedicated roads which are expensive to build. However, there are so many disadvantages to the trolley bus, like:

I don't see any pro arguments for the trolley bus, instead of 'Oh, now busses have overhead wires. I don't see the point in operating trolley bus routes.

I just got the new Sunset Harbour DLC, and.

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