Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online.The Dv12 is the standard Finnish medium-weight diesel-hydraulic road locomotive operated by VR.Dv12 is a general purpose locomotive which was designed for both passenger and cargo train use. Its 1000 kW power is somewhat low by present standards, but it is capable of multiple-unit operation with only one train crew and doublets and triplets are common. It has a low axle weight of 15.6 tonnes, which makes it very well suited for branch lines allowing only smaller axle loads. All axles are interconnected with shafts and universal joints to the Voith L 216 rs hydraulic transmission. Because all axles must rotate at the same speed, individual slipping of axles is impossible.