Global Weather Corporation’s RoadWX™ service provides estimated
road surface conditions and forecasts for any road location in the world –
whether that location is associated with Road Weather Information Sensor
(RWIS) data or not. RoadWX delivers accurate estimates of road conditions to
enable applications such as road weather warnings, navigation guidance, and route
optimization. Typical users include commercial fleets, consumer vehicles, and
transportation departments. When available, connected vehicle data is used to
modify and improve the forecast.
RoadWX combines two critical modeling steps, as shown in this diagram. The first is GWC’s best-in-the-world atmospheric forecast.1 The second is our road physics model, which utilizes radiation transfer algorithms to compute road surface (concrete or pavement) temperature using current weather and road state history as inputs. Accurately predicting road temperature is critical to forecasting road state correctly, making it possible to distinguish between snowfall melting on warm roads or accumulating on cold roads.
GWC road temperature accuracy has been verified by comparison to RWIS observations, shown to the right. As shown in the map below, RoadWX forecasts can distinguish between key road states (dry, wet, snow, and ice) even within a localized area.
RoadWX data is generated at hourly and sub-hourly
intervals, with forecast lead times available to 48
hours. It includes both atmospheric weather variables
and road surface variables (road temperature and
condition), as summarized below.
Two versions of RoadWX are available:
3005 Sterling Circle, Suite 201
Boulder, CO 80301