"Green wave" is an idiomatic expression used in traffic circulation that refers to:
A green wave occurs when a series of traffic lights (usually three or more) are coordinated to allow continuous traffic flow over several intersections in one main direction.
Curiously the same expression is used also in other languages such as Italian “onda verde”, French, “vague verte”, Spanish “ola verde”, German "grüne Welle" and Dutch "groene golf".
Where does “green wave” come from. Was it originally a foreign expression adopted by English speaking countries, or was it coined in English and then spread abroad?