Это они маршруты прям так на стекле пишут?

Yes, most of the routes don't share stops with other routes, so there is no confusion. Tourists rarely use trolleybuses and locals know exactly where it's going. Destination signs aren't really needed in Mexico City.

Did some routes got disconnected recently, i did not find F nor Q on official site?

Цитата (Дима82, 16.11.2009):
> Это они маршруты прям так на стекле пишут?

стрна развитого социализма