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Prague has officialy started runing a new trolleybus system and trolleybus line although just with one bus and its still mostly something like a test run.
Prague had an extensive trolleybus network from 1930's to 1970's. There was a plan to return them in start of 1990's but it was rejected.
In the upcoming years Prague wants to electrify the public transport to enhance environment in the city, however there is a lot of steep hilly streets where trams cannot run effectively and electrobuses would be too costly. Instead of using trolleybuses with a charging stations stations just at the stops, Prague has decided to introduce battery trolleybuses where they run a longer hilly segment of the route under the wires and downhill they can use regenerative braking and return the energy to the network.
The trolleybus therefore is not really fully functional network. It does not have loops or junctions. However we can say there is a trolleybus line back in Prague, since 2018.
