After precisely 45 years, on 15 October 2017, a new trolleybus line was opened in Prague. So far, the system is equipped with
overhead wires along less than 1 km of the route's length and requires trolleybuses with additional batteries, capable of operating away from the wires, along other parts of the route. The goal of this experimental project is to prove the viability of trolleybuses in Prague as well as the ability to minimize the costs needed to build the infrastructure. Overhead wires have been installed along Prosecká Street, which features a steep
gradient. This will prevent a fast battery drain for vehicles running upwards as well as quick-charging of their batteries for the rest of their journey outside of the wired portion of the route. In winter, the direct power supply will also allow for a tank of water to be heated up for interior heating