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Physics/Automobiles Detecting Electronic Traffic Signboards

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Question
Traffic Signs
Traffic Signs  
Dear Dr Jeffery

http://en.wikipedia.org/wiki/Traffic_sign‎

Is it possible to convert the existing Traffic signs into electronic traffic signs so that Automobiles viz cars, trucks, buses, jeeps can play the Traffic sign within their built in internal speaker at a distance ?.

For example :

The transmitter / sensor in Electronic Traffic sign boards will pass the Radio frequency signals and this will be detected by the automobile receiver electronics at a distance. The receiver sensor within the automobile will pay the respective sound files example  : "Zebra crossing ahead", "Go Slow, School Ahead", "Drive slow, Dangerous curve ahead" etc

Awaiting your reply,

Thanks & Regards,
Prashant S Akerkar

Answer
Yes and yes. There are no technical hurdles to this.

This sort of technology has been around for a long time (we could certainly have had it in the 90s) but there is a lack of public will for such things.  Also, in the US at least, there is a strong resistance to having specific instructions given by the car to the drivers and the cost of installing the radio signalers onto signs is something that tax payers don't want to pay.

But from a technical stand point, this is very doable.

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Dr. Jeffery Raymond

Expertise

Materials chemistry. Materials science. Spectroscopy. Polymer science. Physical Chemistry. General Physics. Technical writing. General Applied Mathematics. Nanomaterials. Optoelectronic Behavior. Science Policy.

Experience

Teaching: General Inorganic Chemistry I & II, Organic Chemistry I & II, Physical Chemistry I, Polymeric Materials, General Physics I, Calculus I & II
My prior experience includes the United States Army and three years as a development chemist in industry. Currently I am the Assistant Director of the Laboratory for Synthetic Biological Interactions. All told, 13 years of experience in research, development and science education.

Organizations
Texas A&M University, American Chemical Society, POLY-ACS, SPIE

Publications
Journal of the American Chemical Society, Nanoletters, Journal of Physical Chemistry C, Journal of Physical Chemistry Letters, Ultramicroscopy Proceedings of SPIE, Proceedings of MRS, Polymer News, Chemical and Engineering News, Nano Letters, Small, Chemistry.org, Angewandte

Education/Credentials
PhD Macromolecular Science and Engineering (Photophysics/Nanomaterials Concentration), MS Materials Science, BS Chemistry and Physics, Graduate Certificate in Science Policy, AAS Chemical Technology, AAS Engineering Technology

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