Tree inspections are a major duty of road safety, as tree owners are required by law to ensure that their tree does not pose a hazard. This also applies to private individuals and trees in private gardens. If a tree is obviously diseased, the respective owner must act. Rotten spots, dead branches or fungal fruiting bodies are all signs that can be recognized even by laymen.
Tree inspection should be carried out twice a year, in leafy and non-leafy condition. The control of public trees is carried out with the help of the tree cadastre. There, each individual tree is recorded (analog or digital) and thus made identifiable. Factors such as stability, vitality, species and genus are recorded during initial registration and then checked regularly.