Complex works at construction, reconstruction and adaptation of municipal tram and trolleybus lines – electric cable distributions, fixing of traction supports, public illumination poles, traction lines, shunts, TL relays, trams and trolleybus yards, substations, TL adaptation during adaptation of the tram rail beds and bases, electric installation works on infrastructures of municipal lines – road crossings across tram rails, shelters, travel tickets wending machines, illumination of the pedestrian crossings.