Maglev train is the fastest, followed by high-speed train and EMU.

1. maglev train (3-5 km/h or maximum speed of 1 km/h):

according to the types of electromagnets used, maglev trains can be divided into two categories: normally guided attraction type and superconducting repulsion type.

1. Constant-guide attraction type: Its suspension gap is about 1 mm, and the running speed of this maglev train is usually in the range of 3-5 km/h, which is suitable for intercity and suburban transportation.

2. Superconducting repulsion type: The maximum running speed can reach 1km/h, but the construction technology and cost are much higher than that of the normally-guided attraction maglev train.

second, emu (16km/h to 25 km/h):

emu is to combine powered and non-powered vehicles according to predetermined parameters, so it can be generally said that emu is self-powered and fixed in groups.

A passenger train unit with driver's cab at both ends of the train for driving operation and modern service facilities. EMU is divided into power centralized EMU and power decentralized EMU.

3. High-speed railway (2km/h to 35 km/h):

The speed of newly-built high-speed railway dedicated to passenger trains is more than 35 kilometers per hour, and the speed of newly-built high-speed railway with mixed passenger and freight trains is 25 kilometers per hour.

Extended information

1. Magnetic levitation:

China is developing magnetic levitation technology for vacuum pipelines. The speed can reach 4, kilometers per hour, and the energy consumption is less than 1/1 of that of an airliner. In 27, this project was listed as a national natural science foundation project, and a large number of related patents applied by experts such as Professor Zhang Yaoping have been accepted. In theory, the running speed of vacuum pipeline maglev train can approach the first cosmic speed, reaching 2 thousand kilometers.

2. EMU:

Now the braking technology of EMU is regenerative braking. After the train is braked at 25km, it is completely driven by the reverse rotation of the motor, and the huge inertia of the train is used to generate electric energy and then transmit electricity upwards. This section is a very green and environment-friendly technology without any mechanical wear.

3. High-speed railway:

High-speed railway is very smooth to ensure driving safety and comfort. High-speed railways are all seamless rails, and high-speed railways with a speed of more than 3 kilometers per hour adopt ballastless track, that is, monolithic ballast beds without stones to ensure smoothness. Moreover, the signal control system of high-speed railway is higher than that of ordinary railway, because of its high departure density, fast speed and high safety.

Reference: Baidu Encyclopedia-Maglev Train

Baidu Encyclopedia-China High Speed Railway

Baidu Encyclopedia-EMU