Abstract
Road Weather Information Systems (RWIS) have become a critical component of many agencies' maintenance efforts. Agencies are now considering ways to integrate RWIS with their other intelligent transportation systems (ITS) so weather information can support a broader range of ITS services. Attention is turning to identifying standards that can help ensure the fidelity of weather data being collected as agencies begin to share weather data with a wider audience. This brochure describes three categories of standards being considered for RWIS applications: siting standards, calibration standards, and communication standards.