The system must: • Support access for 300+ concurrent users. • Have an interactive GIS map with individual layers that can be turned on or off. Layers must include current winds, air temperature, pavement temperature, bridge temperature, dew point, and precipitation. • Have current station views which show all the current data from a selected station • Display historical graphs and tables showing data from a selected date/time period and station. A user must be able to retrieve all data collected from any non-image data type • Have an export tool for downloading historical data from a selected date/time period and station into a text file, comma separated values, and/or Microsoft Excel spreadsheet. • Provide a visual alert when there is missing and/or errant data • Provide complete station configurations, including all sensor configurations for use by the Iowa DOT’s Project Manager, their designee, and/or their RWIS maintenance service provider. • Provide user interface through a hosted, web-based, device-agnostic interface. • Be accessible via a mobile application interface, such as tablets and/or smartphones. • The System data must be displayed in English units 3.4.3 RWIS Polling System Data • The System must collect sensor data on a regular schedule from all Iowa DOT RWIS weather stations a minimum of every 10 minutes. • The System must collect and store the following data types from each station, including but not limited to: Air Temperature Surface Temperature – up to 4 locations per station Subsurface Temperature Deep Probe Temperature – 15 locations per station Precipitation type Precipitation rate Precipitation intensity Wind average speed Wind gust speed Wind direction Visibility Dew point temperature Relative humidity Surface condition Surface friction...
