In fact, as early as five years ago, the DGH conducted a survey of Taiwan's cities and counties, indicating 52 sections of road too steep, curved or narrow for coaches.
事實上，早在 5 年前，交通部公路總局即針對全國縣市進行普查，並公告 52 條因坡度過陡、彎度過大或路面狹小而不適宜大客車行駛的路段。