| 释义 |
{{Infobox road
|country=JPN
|type=National
|route=278
|maint=
|alternate_name=国道278号
|map=
|length_km=114.3
|length_round=
|length_ref=
|established=
|direction_a=
|terminus_a=
|junction=
|direction_b=
|terminus_b=
|browse=
}}National Route 278 is a national highway of Japan connecting Hakodate, Hokkaidō and Mori, Hokkaidō in Japan, with a total length of 114.3 km (71.02 mi). {{commonscat|Route 278 (Japan)}}{{Japan-road-stub}} 1 : National highways in Japan |