GNSS is often inaccurate and satellite signals are not always available which results in
ambiguous situations. In order to reduce their negative effects on train-borne localization
this work proposes an approach for the detection of tracks turnouts and branching directions
solely from 2d lidar sensor measurements. The experimental evaluation shows highly correct and
complete results. In summary these detections are sufficient to reduce ambiguity problems in
train-borne localization.
