Patent ID: 8514387

Claim:
An arrangement for marking and measuring sections of track for the purpose of maintaining railroad tracks, comprising: means for optical detection of measuring points; and a sensor unit for detecting measuring points which is configured to be located next to a rail, the sensor unit including: an optical sensor having spectrally selective sensitivity, where the optical sensor measures in a non-contact manner; and an identification detector for individual identification of measuring points, where the identification detector measures in a non-contact manner; wherein the measuring points include at least a first, vertically oriented leg and a second, horizontally oriented leg as angle elements; wherein the first, vertically oriented leg is configured to be detachably fastened to the rail; wherein the second, horizontally oriented leg has a coating which emits in a narrow spectral band for the spectrally selective sensor, and has an identification value carrier for the identification detector; wherein the sensor unit is arranged at a device configured to travel on tracks, so that the optical sensor and the identification detector are configured to be guided parallel to the rail in a same direction over the measuring points with a movement of the device.