noun
priority road
A road where vehicles have the right-of-way at all intersections along it, as designated by traffic signs. Used in legal and driving contexts.
この道は優先道路なので、交差点でも止まらずに進めます。
This road is a priority road, so you can proceed through intersections without stopping.
Compound of 優先 (priority) and 道路 (road). A straightforward modern term from traffic engineering.