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At first glance, a vehicle reminiscent of a passenger bus is far from common, it will not carry passengers. Its uniqueness is given by a somewhat unusual design: on the roof of the bus you can see the pantographs, which are also called mustaches, which generally highlight the trolleybus. This unusual vehicle is the only one of its kind in Lithuania: its registration required special certificates, tests and examinations.
“The idea of producing a special vehicle came about two years ago, based on the experience of professionals in Poland. Faced with the annual weather surprises, we decided not to wait. We started to take care of the special teams’ possibilities ourselves. By entrusting the task to Our engineers who had previously produced trolleybuses, we built the vehicle fast enough. We took longer to process the documents. This time we hope to be able to share the engineering experience with other cities and countries “, says Rimantas Markauskas, General Director of UAB Vilniaus Viešasis you transport.
During winter, frost on the catenary is noticed not only by public transport drivers driving in these difficult conditions, but also by passengers and other road users. Frosts form due to weather conditions, where moisture in the air turns to ice as the temperature changes. This phenomenon is usually observed in the morning, when the drop in temperature during the night mixes with the humidity of the air. This is most noticeable in those places where the humidity is higher, for example, in Vilnius, in the streets near the Neris.
Sparks are formed by poor contact between the carbon in the car gills and the catenary cable because the catenary cable is frozen and ice is a poor conductor. In order to avoid interruptions in public transport, to preserve the technical condition of vehicles and to facilitate the work of public transport drivers during the winter, it was decided to take the most profitable and most probable solution.
The vehicle, built on the basis of the Mercedes Benz Omnibus 405 bus, will proactively clean the catenary at night, when the trolleybuses have finished their work.
“At first glance, we had everything to make a vehicle: a bus and pantographs removed from a trolleybus, but when we built the vehicle, we were faced with a lot of questions about what we should not only call it, but also adapt it accordingly. During the re-registration of the vehicle, special drawings were prepared, technical calculations were performed and electrical safety tests were carried out.
During the preparation of this special vehicle, design changes were made. During the examination, the construction of the bus had to be improved and redesigned several times to meet all technical requirements, “says Andžej Puzevič, Head of the Repair Department at UAB Vilniaus Viešasis transportas.
Vilnius public transport has a total of 250 trolleybuses and 410 buses.
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