"TRAIN TO LVIV - CHANGE OF AXLES" Lviv Transportation Tip by LoriPori
Lviv Transportation: 82 reviews and 146 photos
It was necessary to change axles on our trip from Krakow to Lviv and then again Lviv to Krakow. It took about 2 hours for the changeovers - quite fascinating really.
A Variable Gauge System allows railway vehicles in a train to travel across a break-of-gauge caused by two railway networks with differing track rail gauges, such as between Krakow, Poland and Lviv, Ukraine.
For through operation, a train must be equipped with special bogies (wheeled wagon or framework carrying wheels) holding variable gauge wheelsets containing a Variable Gauge Axle (VGA). The gauge is altered by driving the train through a gauge changer (photos # 1 & 2). As the train passes through the gauge changer, the wheels are unlocked, moved closer together, or further apart (as needed) and are then re-locked.
Variable Gauge Axles (VGA) help solve the problem of a break-of-gauge without having to resort to dual gauge tracks or transfer of cargo or passengers. VGA changes tend to occur more often at international borders.
My source of information was Wikipedia.
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