Jvgdata Circular Curve

A circular curve in the railway network is characterised by a constant radius. The curves start and end at tangent points marked with cant signs on the inside of the outer rail foot with a maximum longitudinal deviation of 0.5 m. Circular curve is included as a trace element in the description of the track geometry and is part of the plane geometry, which also includes straight lines, cant and transition curves. The track geometry represents the projected geometry and refers to the track centre. The data product contains the radius and length of the circular curve and the method used to capture the data. When geometry has the attribute Origin = Geodetic, the data is coordinate-determined. The data product then has a high quality and can be used for all types of applications. At Origin = Arrow height measurement, data is interpreted from mechanical measurement and only suitable for applications where low quality can be accepted. The data product has stretch distribution and connects to the railway network with reference to the immediately preceding node and the immediately preceding kilometre board with distances in metres to both the start and end position of the circular curve (=key points) in the direction of the track link.