関連ワード:  what is a two way carriageway    what is a two lane carriageway    what is a two lane carriageway singapore    what is a two way single carriageway    what is a dual lane carriageway    what is a two lane dual carriageway    difference between dual carriageway and two way road    what is a two way road called    what is a dual carriageway    what is classed as a dual carriageway