规范?    Specifications?

减速标线?    Speed hump?

速限?    Speed Limit?

超速?    Speeding?

放样?    Staking-out?

标准轨距?    Standard Gauge?

公营汽车客运业?    State-Owned Motor Passenger Carriers?

车站?    Station?

钢桥?    Steel bridge?

钢板桩?    Steel sheet pile?

立体摄影机?    Stereometric cameras?

「停」、「让」、「慢」?    Stop, Yield, Slow?

路灯?    Street light?

基层?    Subbase?

路基?    Subgrade?

地陷?    Subsidence?

超高?    Superelevation?

监工?    Supervisor?

辅助控制点?    Supplemental control points?

标志附牌?    Supplemental plaque sign?

面层?    Surfacing?

测量；勘测 ；探勘?    Surveying?

暂停收费?    Suspension from toll?

永续运输?    Sustainable Transportation?

浅沟?    Swale?