| Statewide Surveys |
 Surface Transportation Weather |
Weather events that affect the operation and maintenance of roads | Year* |
| Liquid precipitation, Frozen precipitation, Flooding, Slick pavement (due to water, snow or ice, black ice), Snowslides (avalanches) | 2004 | |
| Low visibility due to fog, wind-blown snow, wind-blown dust, smoke | 2004 | |
| High winds, Tropical storms and hurricanes, Tornadoes, Landslides (mudslides, rockslides), Sand or dust | 2004 | |
Types of road weather information used to make operational decisions | Year* |
| Atmospheric data (e.g., precipitation, air temperature, visibility distance) | 2004 | |
| Pavement condition data (e.g., wet, freeze point temperature, chemical concentration) | 2004 | |
| Water level data (e.g., stream levels, river forecasts, tide levels) | 2004 | |
Environmental data collected to support operational decisions | Year* |
| Air temperature, air quality, dew point and relative humidity, barometric pressure, visibility distance, cloud cover/solar radiation | 2004 | |
| Precipitation type, precipitation rate, water level (in streams, rivers, and lakes near roads), wind speed and gusts, wind direction, subsurface conditions (e.g., soil temperature, depth of frost level) | 2004 | |
| Pavement surface temperature, freezing point, condition (wet, dry, icy, snow-covered, flooded), snow depth, friction coefficient, and chemical concentration | 2004 | |
Use of Environmental Sensor Stations (ESS) that are Components of a State DOT Road Weather Information System (RWIS) | Year* |
| Number of ESS in RWIS | 2004 | |
| Available map with ESS deployment data | 2004 | |
| Other sections within agency involved with the operation of or have responsibility for ESS | 2004 | |
| Entities with which your agency shares ESS observational data | 2004 | |
| Barriers to sharing ESS observational data | 2004 | |
| Private vendor for ESS data collection, RWIS network operation, or RWIS network maintenance | 2004 | |
| Operational periods for your ESS | 2004 | |
| Barriers to obtaining or implementing Environmental Sensor Stations | 2004 | |
Other systems (other than ESS) used to gather road weather information | Year* |
| Agricultural monitoring networks, air quality sensing stations, mobile environmental sensor, airport monitoring stations (e.g., ASOS stations, AWOS stations), closed circuit television (CCTV) cameras, state-owned mesoscale environmental monitoring network | 2004 | |
| Data collected by mobile environmental sensor | 2004 | |
Sources of weather information | Year* |
| National Weather Service, Federal Aviation Administration, U.S. Geological Survey, National Hurricane Center, Department of Defense, reports from field personnel, private weather information service | 2004 | |
| Weather products tailored to your operational requirements | 2004 | |
Use of road weather information | Year* |
| Coordination of data gathering with other states | 2004 | |
| Sharing road weather information with other agencies/entities | 2004 | |
| Receiving road weather information from non-weather agencies/entities | 2004 | |
| Methods of providing road weather information to the traveling public | 2004 | |
| Use of telephone number (other than 511) with interactive voice response technology to provide road weather information to the traveling public | 2004 | |
| Type of road weather information disseminated to the public | 2004 | |
| Compatibility of weather information format for integration with existing GIS and overlay on a road network | 2004 | |
| Archiving weather data to permit re-use in forensics or validation studies | 2004 | |
Surveillance, Monitoring and Prediction | Year* |
| Deployment of in-pavement or road surface sensors to track pavement conditions | | 2006 |
| Deployment of environmental sensor stations (ESS) in rural areas | | 2006 |
| Deployment of sensors to monitor water levels on roadways | | 2006 |
Traffic Control | Year* |
| Technologies used to disseminate weather information to travelers | | 2006 |
| Use of variable speed limits in response to weather conditions | | 2006 |
| Changing traffic signal timing in response to weather | | 2006 |
| Deployment of ITS technologies to manage traffic diversions in response to road closures due to weather events | | 2006 |
| Use of ITS sensors and information dissemination technologies to determine the need to implement temporary restrictions on vehicles during inclement weather conditions | | 2006 |
Response and Treatment | Year* |
| Deployment of automatic bridge anti-icing systems | | 2006 |
| Deployment of snow plows with AVL, communications and sensors to monitor treatment | | 2006 |
Integration | Year* |
| Communicating weather warnings or forecasts in real-time with data archiving agencies/systems | | 2006 |
| Communicating weather warnings or forecasts in real-time with public safety agencies/systems | | 2006 |
| Communicating weather warnings or forecasts in real-time with state police | | 2006 |
| Communicating weather warnings or forecasts in real-time with local agencies | | 2006 |
| Communicating weather warnings or forecasts in real-time with traffic management agencies/systems | | 2006 |
| Communicating weather warnings or forecasts in real-time with incident management agencies/systems | | 2006 |
| Communicating weather warnings or forecasts in real-time with traveler information agencies/systems | | 2006 |
| Communicating weather warnings or forecasts in real-time with information service providers | | 2006 |
| Communicating weather warnings or forecasts in real-time with tourism boards | | 2006 |
| Communicating weather warnings or forecasts in real-time with other states | | 2006 |
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