1. What are the initials of the high-speed train? China's railway trains are mainly divided into bullet trains, high-speed trains and bullet trains, among which the letters Z, T and K are generally trains; The letter d begins with bullet train; The letter G starts with the high-speed rail, which is the fastest at present.

2. The train starting with Z is a direct express passenger train. The train starting with T is a particularly fast passenger train, which is called express train for short. The train starting with k is an express passenger train, which is called express train for short.

Generally, D-prefix trains have only first-class seats and second-class seats. Most G-prefix trains have business seats and special seats in addition to first-class seats, and the environment is relatively good.

4. High-speed rail means that the railway is built with high-standard technology (such as laying ballastless tracks and replacing roads with bridges). ), the high-speed EMU can run on it.