Documents in the NTIS Technical Reports collection are the results of federally funded research. They are directly submitted to or collected by NTIS from Federal agencies for permanent accessibility to industry, academia and the public.  Before purchasing from NTIS, you may want to check for free access from (1) the issuing organization's website; (2) the U.S. Government Printing Office's Federal Digital System website; (3) the federal government Internet portal; or (4) a web search conducted using a commercial search engine such as
Accession Number PB2013-103270
Title Best Practices in the Use of Hybrid Static-Dynamic Signs.
Publication Date Dec 2012
Media Count 1p
Personal Author A. Gan D. McCarthy D. Saha K. Haleem P. Alluri
Abstract Static signs are traditionally used to convey messages to the road users. The need to quickly communicate up-to-date messages to the road users has given rise to the increasing use of dynamic message signs (DMS). An alternative to DMS is hybrid signs, which display both static and dynamic messages on a single sign. A hybrid sign consists of a conventional retroreflective static sign that is embedded with one or more relatively small, dynamic, usually light emitting diode (LED) message panels. Potential advantages of hybrid signs over DMS include better legibility, shorter reading time, smaller size, and lower installation, operation, and maintenance costs. This report first provides a comprehensive state-of-the-practice review of existing hybrid sign applications in both the U.S. and around the world. The review focused on several application areas, including speed control, parking guidance, travel time and travel distance information, dynamic rerouting information, and graphical route information. Further, it also identifies the companies that manufacture and market hybrid signs in the U.S. It was found that only a small number of sign manufactures have hybrid sign products for applications other than variable speed limit signs.
Keywords Dynamic Message Signs(DMS)
Hybrid sign applications
Hybrid static-dynamic signs
Light Emitting Diode(LED)
Parking guidance
Rerouting information
Road users
Speed control
Static signs
Travel distance
Travel time

Source Agency Department of Transportation Office of University Research
NTIS Subject Category 85H - Road Transportation
43G - Transportation
50A - Highway Engineering
91B - Transportation & Traffic Planning
Corporate Author Florida International Univ., Miami. Lehman Center for Transportation Research.
Document Type Technical report
Title Note Summary rept.
NTIS Issue Number 1308
Contract Number BDK80-977-15

Science and Technology Highlights

See a sampling of the latest scientific, technical and engineering information from NTIS in the NTIS Technical Reports Newsletter

Acrobat Reader Mobile    Acrobat Reader