A signal is a specific type of sign that is usually characterized as requiring an immediate response.
In this sense, the stop sign at the end of a motorway exit may more correctly be called a stop signal (i.e., road signs are rather road signals).
The function of the signal is to elicit an instantaneous response – here and now (at the same time that someone elicited it).
Failure to do so may trigger other signals – sirens and gestures for the arrival of the police.
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A completely and truly free course on Semiology (Semiotics). Learn about the meaning of signs, how and why did the field emerged. What is the relationship between the street signs and the signs that we use every day - words.
