Road Weather Stations
Road Weather Stations
Knowledge of the current weather situation on the roads is continuously gaining in importance both for the operator and for the user.This information is used for planning winter road clearance activities as well as traffic flow (journey times) and safety. Permissible speeds in the vicinity of traffic control installations are also calculated based on this information.
RWIS (Road Weather Information System) stations measure all relevant local weather data in real time, and transmit this information to traffic computer and RWIS centres along with motorway depots, highway maintenance depots and other operation centres. These data are increasingly being made available to road users to keep them informed of current outside temperatures and icy roads.
The modular design enables system configurations tailored to the customers' individual requirements to be easily realised. The sensors can make the following measurements and detect the following conditions:
- Air temperature, underground temperature and surface temperature
- Humidity
- Surface conditions (dry, wet, snow, ice)
- Visibility
- Type, intensity and amount of precipitation
- Wind speed and direction
- Dew-point temperature (calculated)
- Water film thickness
- Concentration of de-icing chemicals
Data can be transmitted via field bus, GSM/GPRS/EDGE or fibre-optic cable in accordance with TLS. It is also possible to provide road users with up-to-date information on variable traffic signs, which in turn increases traffic safety.
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