Road Angel / Road infrastructure

City manhole cover is the part of the city road,is the main way of rain drainage,the heavy rain,some head cover has been bad or Drainage wells has been bad,this is a need for Road Angel to help,when there is no rain in the manhole cover mouth,using the Road Angel ,in the Road Angel A curved lines,convenient water into the wellhead,wellhead when the road loses the drainage function,cutting the city in the water reaches a certain height,the use of Road Angel prompt scale above advise the exact level,when the water level reached the realm of the water level,Road Angel is designed as a hollow,rainwater into the Road Angel.