In this case, the train will slow down or even stop, and then open the railing at the crossing to let the ambulance go first. I was in grade crossing, the railway at the intersection of Hudong Road and Huashan Road, and I saw many times that the ambulance of Maanshan Hospital crossed the crossing first. But you said that the crossing of Maanshan iron and steel swimming pool is the Ningwu line of the national railway, which is fast and it is impossible to open the door for safety. Hey, if only it were all changed to interoperability; However, the construction involving China Railway must be carried out by the relevant construction enterprises of China Railway and reported to the Railway Bureau for approval; Insiders revealed that this is a fat job, so their asking price ... I won't say it. This is also one of the reasons for the delay in transformation.