Whilst we can monitor RWIS stations and compare observations against forecast at these stations, this is not possible along the RBF route. Any changes at the RWIS station locations will affect the RBF forecasts within the area, but as it is a dynamic process, it is not possible to say by how much the RSTs will change along the route. You can check RoadMaster to see updates to sites/RBF, but please note that it will take some time (next issue) for the new obs and forecast to filter through.