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Federal Highway Administration Research and Technology
Coordinating, Developing, and Delivering Highway Transportation Innovations

 
FACT SHEET
This fact sheet is an archived publication and may contain dated technical, contact, and link information
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Publication Number:  FHWA-HRT-19-012    Date:  January 2019
Publication Number: FHWA-HRT-19-012
Date: January 2019

 

Efficient Messaging for Changeable-Message Signs During Nonrecurring Events

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Changeable-Message Signs

Changeable-message signs (CMSs), also referred to as variable- or dynamic-message signs, are programmable signs used on roadways throughout the United States. Because they provide relevant, current information safely, CMSs are among the most popular methods of disseminating information about nonrecurring events to travelers.

FHWA-HRT-19-012 PDF Cover Image

 

 

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