Is there a subway in Zhengzhou?

Subway, the abbreviation of "underground railway", originally refers to the urban rail transit system running underground, but with the development of urban rail transit system, in fact, the subway sometimes lays some lines on the ground due to the construction environment. Subway is a fast and large-capacity electric traction urban rail transit mode, which is gradually developed along the form of underground railway system.

From a professional point of view, the difference between light rail and subway is not whether the track is underground, but its track weight: light rail is below 60 kg per meter, and subway is above 60 kg per meter. Subway is a form of railway traffic, which refers to the urban rail transit system that mainly runs underground, that is, the abbreviation of "subway" or "underground".

Brief introduction of subway

In order to match the construction environment and consider the construction and operation costs, many of these systems may be converted to the ground or elevated roads outside the city center. Subway is a high-density and large-capacity urban rail transit system, covering all kinds of underground and above-ground road rights in urban areas. The subway in Taiwan Province Province, China is called "MRT".

High-speed railway, referred to as high-speed railway for short, refers to the railway with high design speed standard of infrastructure, which can be used for the safe and high-speed running of trains on the track, and the running speed of trains is above 250 km/h. High-speed rail has different regulations in different countries, different times and different scientific research and academic fields. The National Railway Administration of China defines China's high-speed railway as a passenger dedicated railway with a design operation speed of more than 250km/h (including reservation) and an initial operation speed of more than 250km/h, and has issued the corresponding document "Code for Design of High-speed Railway".