Road Weather Management Program
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Best Practices for Road Weather Management Version 2.0


Fog Warning System on Penn Turnpike Adjusts Speed based on Visibility


This article describes a 5.7 million dollar ITS installed on a section of the Pennsylvania Turnpike where a fatal pileup occurred in 2003. During the first day in automated mode, 93 activations due to poor visibility were recorded. The Turnpike will monitor driver compliance with warnings and dynamic speed limit.


Inside ITS; January 15, 2006 issue. For an electronic copy of this resource, please direct your request to

Date: 2006


Inside ITS


Speed management
Motorist warning system
Dynamic message sign (DMS)
Intelligent Transportation Systems (ITS)
Traveler information

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