noun
public road; highway
Refers to a road maintained for public use, often a major route or highway. Slightly formal or technical compared to 道路.
新しい公路が開通して、通勤が便利になった。
A new highway opened, making the commute more convenient.
この公路は夜間も明るくて安全だ。
This public road is well-lit and safe even at night.
Compound of 公 (public) and 路 (road). The exact historical derivation is uncertain, but the word follows standard Sino-Japanese word formation patterns.