service road
noun [ C ] uk/ˈsɜː.vɪs ˌrəʊd/ us/ˈsɝː.vɪs ˌroʊd/ (US also frontage road)
（与主路平行的）辅路，侧路
a small road next to a bigger, faster road, that you use to drive to houses and shops that cannot be reached using the fast road
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