Doubleyellow

Doubleyellow is a nonstandard term that may refer to multiple concepts depending on context. It is not defined in major dictionaries and does not denote a single, official entity.

In road signage, the term is commonly associated with two regionally distinct concepts that vary by jurisdiction. In North America, double yellow lines in the center of a roadway denote a no-passing zone; vehicles are typically prohibited from crossing the lines to overtake another vehicle. In the United Kingdom and many Commonwealth countries, double yellow lines along the edge of a road indicate parking or waiting restrictions; the exact restrictions are shown by nearby signs and can vary by time of day and locality.

Beyond traffic signage, "doubleyellow" may appear as a brand name, project codename, or online handle. In such cases, its meaning is determined by the organization or individual using it and is not standardized.

Etymology and usage: The form "doubleyellow" is a concatenation of the words "double" and "yellow," reflecting the color coding of road markings. It appears mainly in informal writing, filenames, and usernames rather than formal signage or regulation documents.

See also: road markings, no passing zone, no waiting restrictions, double yellow line.