| CPC G08B 13/1961 (2013.01) [E21B 7/02 (2013.01); E21B 41/0021 (2013.01); H04N 5/265 (2013.01); H04N 7/188 (2013.01); H04N 23/54 (2023.01)] | 16 Claims |

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1. A civil engineering device with
an undercarriage with crawler chassis,
an upper carriage, which is separately arranged on the undercarriage and supported rotatably, and
a mast, which is oriented vertically and mounted on the upper carriage, the mast having a first side on a same side as the upper carriage and having a second side on an opposite side of the first side,
wherein arranged on an upper area of the mast on the first side is a first camera, and on the second side is a second camera, by which an image of the civil engineering device and its surroundings can be recorded, and a circular security area is defined in the image that surrounds the civil engineering device,
wherein at least one camera of the first camera and the second camera is connected to at least one control unit and
a warning signal can be emitted by the control unit when a person or an object approaches relative to the civil engineering device and enters the circular security area.
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