The post responsibility of subway safety officer is to carry out the relevant engineering quality and implement various rules, regulations and standards. Carry out the "Safety Production Operation Regulations" and "Chuanbo Construction Production Management Standards". Regularly supervise and inspect the implementation of the technical operating rules of TRANBBS, and supervise and improve the illegal operation.

Subway is a form of urban public transportation. There are two understandings of this word: it refers to the urban rail transit system that mainly runs underground, that is, the abbreviation of "subway" or "subway" In order to match the built environment and consider the construction and operation costs, many of these systems may be transformed into ground or elevated parts outside the city center.