What's the difference between subway wheels and train wheels? How to distinguish subway wheels from train wheels?

1, there is basically no difference between wheels, and the difference may be in diameter!

2. Train, one of the modern means of transportation for human beings, is a typical example of human beings using fossil energy for transportation. Refers to the vehicles running on the railway track. Usually, the subway is a form of railway 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, pipe and underground"; 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. It refers to a high-density and high-volume urban rail transit system (subway) covering all kinds of underground and above-ground road rights in the metropolitan area. Taiwan Province province is called "Rapidtransit".

3. Subway is a fast and large-capacity electric traction urban rail transit mode, which is gradually developed along the form of ground railway system. Its lines are generally laid in underground tunnels, and some of them are laid outside the city center, from underground to the ground or on viaducts. In addition to the subway mentioned above, it also includes elevated railways or railways laid on roads. Therefore, the subway is the exclusive right of way, and there is no grade crossing, which is also the fundamental sign that the subway is different from the light rail transit system.