System for informing traffic users about state of road; has moisture meter associated with road, whose data can be detected by control system and converted into information

摘要

The system has a moisture meter (6) associated with the road (1,) whose data can be detected by a control system (4) and converted into information or switching operations. The moisture meter may determine the relative moisture or measure absolute moisture, may be mounted in or on the road surface and may have an associated temperature sensor.