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7003 documents found.

Changeable-message signs.

Published: | Hart, I.

Changeable-message signs in Ohio.

Published: | Burns, R.N.

Design, operation, and utilization of changeable-message signs with emphasis on the retating-drum type.

Published: | Dunne, S.B.

Fog detectors for controlling changeable-message signs.

Published: | Spear, E.D.

Newest cost breakthrough of changeable-message matrix signs.

Published: | Mauro, J.J.,

Potential uses of variable-message signs in New York City.

Published: | Hoddinott, E.V.

Research development of the changeable-message concept for freeway traffic control.

Published: | Hulbert, S. & Beers, J.

Some principles for communicating with drivers through the use of variable-message displays.

Published: | Stephens, B.W.

The DISTEC system : a sign of our times.

Published: | Aiken, W.R.

Use of changeable-message signs by port authority.

Published: | Bender, L.E.