CCTV News: Passengers who often take high-speed rail will find that the headlights of the high-speed rail train are always on. Is there a difference between high-beam and low-beam trains? Are high beams or low beams on high-speed trains? Let’s have a lot of knowledge during the Spring Festival travel rush, let’s take a look at today’s “How much does it know about the high-speed rail”.

The bright and strong light of the high beam will interfere with the car driving opposite, causing the drivers driving opposite vehicles to see the road conditions in front of them, which has safety hazards. Therefore, when driving a car at night or when the light is dark, the high beam cannot be turned on when driving, and the low beam is often turned on.

Like cars, high-speed train headlights also have two lighting modes: low beam and high beam. In contrast to cars not turning on high beams easily, high-speed trains mainly use high beams when driving at high speeds, whether during day or night. Unlike cars that need to turn on high beams when there is insufficient light, high-speed trains turn on high beams during the day and at night. Like a car, the fog lights are only turned on in fog genre. Will the use of high-beam lights on high-speed trains interfere with other trains traveling across the opposite side like cars, causing train drivers to not see the road conditions ahead?

Xia Guohui, director of the Command Center of the Wuchang South Locomotive Section of the State Railway Wuhan Bureau, introduced that the high beam of the car is on both sides of the front of the car. When using high beams on the road, it scatters a large range, which causes glare to the driver of the vehicle, affecting driving safety. Both high beam lights of high-speed trains are designed to be placed in the middle of the top of the vehicle, making the lighting range more concentrated. When driving on a dedicated line, it has no effect on the high-beam EMU passing nearby. Therefore, whether on the platform or during driving, high-speed rail trains use high-beam lights, while low-beam mode is used when driving into the warehouse for maintenance to prevent glare to ground workers.

So, why do high-speed trains always have high beam lights?

High beams are used when high-speed rail trains are driving, mainly to allow drivers to clearly see the conditions of the tracks ahead, signal signs and other information when driving at tunnels or at night. A high-speed train with a speed of 300 kilometers per hour runs out more than 80 meters in one second, and a high-speed train with a speed of 350 kilometers per hour can run out nearly 100 meters in one second. At such a fast speed, the surrounding environment instantly passed by. The high beam lights of high-speed trains can reach about 2 kilometers, allowing drivers to obtain information within the maximum range of sight. In this way, in case of an emergency, the driver can provide more judgment and operation time, and minimize risks and losses as much as possible. Therefore, whether it is a car using low beam or a high-speed train using high-beam, it is all about ensuring driving safety.