专用房屋 meaning in English

function building
functional building
single purpose building

" highway facilities " mean drainage facilities ; protection installations ; crossroads ; boundary markers ; survey stakes ; safety , communications , checking , supervision , control , maintenance , and service facilities ; flower beds ; lawns ; trees ; and special - purpose buildings
“公路设施”是指公路的排水设备、防护构造物、交叉道口、界碑、测桩、安全设施、通讯设施、检测及监控设施、养护设施、渡口码头、花草林木、专用房屋等。