This service contains the aggregated, material usage, labor, equipment and related costs for maintaining Iowa DOT's road network during winter snow events for the past 48 hours. Data is derived from the snowplow AVL/GPS data feeds. This data is used for Iowa DOT's Winter Cost Calculator 3-Hour Application. This data is updated every 15 minutes. This data powers the Iowa DOT Winter Cost Calculator Note: All values estimated based on best-available data.