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Textbook analysis: the correct way to use high beams, fog lights, and double flashes

Have you ever had this thought while driving:

  1. Idiot with high beam on
  2. Turning on fog lights on rainy days is a novice
  3. It’s too amateurish to use double flash on a rainy day

The saying "a full bottle does not shake, but a half-filled bucket of water clumps" is a perfect way to evaluate these statements.

Let's first explain the correct way to use high beam. First of all, you need to understand that not all road sections are allowed to use high beam, but you really don't want to be a so-called "high beam dog"; on urban roads with lighting conditions (street lights), When traveling on expressways, national highways, provincial highways and other sections of villages, towns or bridges, vehicles should not use high beams, because at this time, the road conditions can be clearly identified even without turning on the lights. The core factor is why commuting on urban roads at night requires turning on lights. It is through the taillights that the ability to identify vehicles and pedestrians is improved. It is not necessary just to identify the road conditions ahead. However, you must not turn on the lights just because you are considering "saving electricity and fuel". If you fail to use the lights correctly and cause a rear-end collision, you may be fully responsible for being rear-ended.

Secondly, you cannot (but should not) use high beam when following the car in front at a close distance. When meeting other cars on a road without a sunshade barrier, you must switch to low beam when you are 150 meters away from the front car. The bridge also needs to switch to low beam when meeting a motor vehicle. These rules come from Articles 48-5 and 48 of the "Regulations for the Implementation of the Road Traffic Safety Law". Violating the rules and using lights will be punished as long as they are recorded; when driving on urban roads with good lighting conditions, using high beams is somewhat "malicious" Yes, you will naturally be responsible for causing traffic accidents; however, when crossing a zebra crossing or crossing a non-motorized lane, you can change the high and low beams to observe the road in advance. After observing, you still need to use the low beams.

Textbook analysis: the correct way to use high beams, fog lights, and double flashes 1

Important: In some special weather conditions, you cannot use high beams indiscriminately.

For example, in low-visibility traffic and meteorological conditions such as rain, snow, fog, sand and dust, vehicles should use low-beam headlights! Because no matter whether it is water droplets or ice crystals suspended in the air, even gravel will refract light. As long as the surface is flat, it will have an ideal refraction effect; then countless water droplets or gravel suspended in the air will refract light infinitely (mist is also air (water droplets suspended in the middle). At this time, if you turn on the high beam that dissipates heat, a "light curtain wall" will appear on the road ahead due to refraction - have you ever watched a water curtain movie? The effect is basically the same, and it is difficult to see the road conditions behind clearly. .

Therefore, when driving in these low-visibility weather, you must use low beam and turn on the fog lights at the same time. The essence of fog is water suspended in the air. Rain, snow ice crystals, and gravel can all reflect light, so fog lights are not natural water. Fog is suitable for use. As long as it affects the realization, you can use the combination of "fog lights + low beam lights". After turning on these two lights, the side lights, front and rear lights will be turned on simultaneously, and there is no need to worry about other lights.

Textbook analysis: the correct way to use high beams, fog lights, and double flashes 2

Textbook analysis: the correct way to use high beams, fog lights, and double flashes 3

Through the above content, have you learned how to use low beam, or when high beam cannot be used? ——The real key point is to think backwards. The rules state that high beams cannot be used in certain scenarios. This also means that high beams can be used normally in other scenarios.

  • Road sections without lighting conditions
  • Medium and high-speed sections
  • No meeting traffic section

Not only can high beams be used, but they must be used on these road sections; the irradiation range of low beams is very narrow, with a straight line distance of about 40 meters at most; sections without road lighting conditions require observation of the roads on both sides, especially You need to observe the road signs on the right side of the road. The signs will include speed limits, landmarks, ramps, crosswinds, sharp turns, approaching schools, etc. Low beam lights cannot clearly illuminate higher street signs; therefore, high beams should be used when driving normally. Use lights to judge road conditions, just do not use high beam when following a car, and do not use high beam when passing another car. Even if you need to observe nearby road signs while following a car, it is no problem to briefly switch to high beam for observation.

Textbook analysis: the correct way to use high beams, fog lights, and double flashes 4

Of course, you need to use high beams on medium and high speed sections, because high speeds require long braking distances, and long braking distances require a large enough distance between vehicles; for example, a highway requires at least 100 meters, and low beams can illuminate about one-third of the road at best. At this time, if there is a car without headlights, a non-motorized vehicle or an animal crossing the road ahead, there is only a few dozen meters of safe distance when an obstacle is found. The actual road and the braking system of mass-produced vehicles There is a big gap in the friction coefficient of the moving test road. The number of passengers and the degree of tire wear will also affect the friction of the tires. To put it bluntly, the actual emergency braking distance is longer than the test results. It is not at all about 50 meters. Exaggeration, so can it be safe to brake using low beam as a driving light?

Textbook analysis: the correct way to use high beams, fog lights, and double flashes 5

To sum up, car high beams are the main lighting for driving on unlit roads and highway sections. They only need to be switched to low beams in appropriate scenes. The above-mentioned rules on special early disabling of high beams come from the same implementation regulations. For the 81 models, the regulations on the use of fog lights come from the same source, so I won’t go into details here. It should be noted that fog lights should not be turned on in normal weather, because fog lights dissipate heat and will be quite dazzling and annoying when turned on in high-visibility weather.

  • How to use double flash? (Double flash is the common name of danger alarm flashlight)

It is generally believed that it only needs to be opened when the vehicle breaks down or is temporarily parked, or it can be opened and used when driving in a group; the former statement is correct and is clearly stated in Article 61, but the second statement is absolutely wrong! ——Public vehicles that have not been declared and approved are not allowed to use double flashing lights when driving in groups, no matter how long the group is; it is best not to try it for general self-driving groups, and it is best not to try it for wedding groups. This is only true for white groups. Tolerance, after all, is a bit special in feelings.

Textbook analysis: the correct way to use high beams, fog lights, and double flashes 6

Correct usage scenarios of double flash include:

  1. Turn on fog lights and double flashers when driving in foggy weather (58 items)
  2. Both the front and rear vehicles of the tractor trailer should be turned on (61-5)
  3. When the visibility is less than 100 meters, turn on the fog lights and double flashers when driving on the highway (81-3)

The implementation regulations have clear explanations. "Regulations" is a name for the law. Traffic law implementation regulations can be understood as traffic regulations. It is correct to drive in compliance with traffic laws. Therefore, double flashers are definitely not prohibited during driving, as long as the visibility is met. conditions can be opened.

As long as they are not in the emergency lane while driving, drivers with a little judgment can correctly understand the intentions of the vehicle in front; especially on highways where parking in the traffic lane is not allowed, so when the visibility of the highway is low, you can open the vehicle in the traffic lane Double flashing has a much better warning effect than rear fog lights. In the same way, other expressways that also do not allow lane parking are theoretically possible, but the implementation regulations have not been interpreted in more detail. By now, you should be able to master the correct use of car lights, and develop the habit of not using high beams, high beams, etc. indiscriminately. Use your fog lights correctly.

Textbook analysis: the correct way to use high beams, fog lights, and double flashes 7

Editor: Tianhe Auto-Automotive Science Island

Published by Tianhe MCN, copyright protection rights reserved

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