公共设施应该是public facilities下面是跟交通相关的词汇，楼主要更多的话 去这个地方哈：
http://www.minglang.org/paper/danci11.html交通规则traffic regulation路标guide post里程碑milestone停车标志mark car stop红绿灯traffic light自动红绿灯automatic traffic signal light红灯red light绿灯green light黄灯amber light交通岗traffic post岗亭police box交通警traffic police打手势pantomime单行线single line 双白线double white lines双程线dual carriage-way斑马线zebra stripes划路线机traffic line marker交通干线artery traffic车行道carriage-way辅助车道lane auxiliary 双车道two-way traffic自行车通行cyclists only 单行道one way only窄路narrow road潮湿路滑slippery when wet陡坡steep hill不平整路rough road弯路curve road ; bend road连续弯路winding road之字路double bend road之字公路switch back road下坡危险dangerous down grade道路交叉点road junction十字路cross road