noun
main road; arterial road; main thoroughfare
Refers to a major road that serves as a primary route for traffic, similar to 幹線道路. Often used in urban planning or traffic contexts.
See also: 幹線道路
この幹線道はいつも渋滞している。
This main road is always congested.
Compound of 幹線 (main line, trunk line) and 道 (road, way).