What time is the earliest train on Wuhan Optics Valley Metro Line 2?

subway

Introduction:

Subway, as a form of railway traffic, refers to the urban rail transit system that mainly runs underground, that is, the abbreviation of "subway" or "subway". Many of these systems will be converted to the ground or elevated roads outside the city center to match the construction environment and consider the construction and operation costs. From a professional point of view, the difference between light rail and subway is not in the sky and underground, but in its rail weight and maximum cross-section passenger flow: the rail weight is less than 60 kilograms per meter, and the passenger flow per hour is1.5,000 to 30,000 passengers. A subway with a track weight of more than 60 kilograms per meter and an hourly passenger flow of 30,000 to 60,000 passengers is called a subway.

Basic meaning:

In the English-speaking environment, according to the different development origins and usage habits of similar systems in different cities, subways are often called: Metro (Paris, Chinese mainland), MRT (Singapore, Taipei, Kaohsiung, etc.)), MTR (especially the Jinggang subway in Hong Kong and Beijing (Line 4 and 14)), underground (especially the above-ground track), and railway (.

Features:

(1) Save land

Because of the high value of urban land in general metropolis, building railways underground can save ground space and make the ground land available for other purposes.

Reduce noise

The railway is built underground, which can reduce the noise on the ground.

(3) reduce interference

Because the running route of the subway does not overlap or cross other traffic systems (such as ground roads), there is less traffic interference and a lot of commuting time can be saved.

Energy saving

Under the problem of global warming, subway is the best public transport. Because the subway runs smoothly, it saves a lot of commuting time, makes people happy, and also replaces a lot of energy consumed by driving.

(5) reduce pollution

Ordinary cars use gasoline or petroleum as energy, and subways use electric energy, so there is no tail gas emission and no pollution to the environment.