Why has Beijing Metro Line 3 been dusty for many years?

The reason why Beijing Metro Line 3 is dusty is that in the two planning adjustments of 1999 and 2002, the important functional areas along the line were replaced by other lines. China-Beijing Metro Line 3 was officially started in April 2065438+2006, and the first phase of the project is expected to open in 2023.

The benefits of the subway

Save land, reduce noise, interference, energy, pollution and land. Because the value of urban land in general metropolis is very high, building the railway underground can save ground space, make the ground land can be used for other purposes and reduce noise. Building the railway underground can reduce ground noise and interference. Because the running route of the subway does not overlap with other transportation systems such as ground roads.

Crossing, so the traffic is less disturbed, which can save a lot of commuting time and save energy. 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. Reduce pollution. Ordinary cars use gasoline or oil as energy.