Ice Warning Systems

General Description:

Ice Warning Systems utilize Road Weather Information Systems (RWIS), Environmental Sensing Station(s) (ESS) and pavement sensors to gather weather information and roadway conditions to predict the formation of ice.  This information is conveyed to motorists through the use of Variable Message Signs (VMS).  Additional equipment that may be used in conjunction with the ice warning system is an Anti-Icing System, which uses chemicals to melt ice on dangerous stretches of roadway.

Effects of Solution:

¨ Increase Passenger Throughput

¨ Increase Roadway Capacity

þ Manage System Efficiency (Improve safety of a facility)

¨ Reduce Local Demand

An Ice Warning System can assist in system management, but its main objective is motorist safety.

Examples of Implementation:

See the RWIS fact sheet for more information.

Cost/Financial Information:

(Cost/financial information is estimated, and will vary based on size and scope of project, number of units, etc.)

The cost of implementing an Ice Warning System includes the cost of the RWIS, pavement sensors, signage (such as a dynamic message sign), and any processing equipment. See the RWIS fact sheet for more detailed cost information.

Additional Resources:

Department of Transportation website address:

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