n.1.A board, as upon a guidepost having upon it directions or information as to the road.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
Some EEG recordings include the driver performing various visual tasks such as reading, watching numbers on the keyboard, and reading the guideboard. Under these conditions, the EEG signal might be susceptible to interference from the much stronger EOG signal arising from the eye motion, particularly if EEG signal is recorded from near the front of the skull [13].
Lane writes straight and solid, like a guideboard, but I find that I put off the "social tendencies" to a future day, which may never come.
Today, LEDs are replacing other light sources in many fields, such as indoor-outdoor and automotive lighting, screen backlighting, guideboards, signal systems, and panel screen lighting [4, 5].
They could read the guideboards. They could write passes for each