Under normal circumstances, the high beam should be turned on at high speed, but in some special scenes, it is also necessary to switch to the low beam. However, as long as the money is in place, basically the car configuration is high enough, and there is no need to change it with one button. It will take care of it for you.
Turn on the high beam under normal circumstances.
The high beam has a wide irradiation range.
Why turn on the high beam at night? The simple truth is: you can see farther and broaden your horizons, right?
There is a paper in Automotive Electrical Appliances magazine, which mentioned the research on the performance test and evaluation of high beam.
When the car is driving at night, the high beam of the headlight should ensure that the road surface in front of the car 100m is brightly and evenly illuminated.
Drivers can see the obstacles on the road and take timely braking or bypass measures to keep the parking distance within the line of sight.
Low beam lamp, 40m, something like this. One is 100m and the other is 40 m.
This is still an ordinary high beam. At present, the irradiation distance of the most advanced laser headlights reaches 600m, far exceeding the irradiation range of low beam lamps.
Wide field of vision and better safety.
Driving on the highway without street lights at night, the vision is wider, which means safer. If you can't see clearly, how can you talk about safety?
There is a paper in Electronic Technology and Software Engineering, which mentioned the research of automatic switching between far and near light in car headlights.
The quality of driving vision will directly affect driving safety. More than 80% of traffic information related to driving is obtained through vision.
Whether the road surface shape, lane direction and surrounding traffic environment have changed. , all by the eyes.
Therefore, under normal circumstances, the highway is driven at night, and for safety, the high beam is used.
Some special circumstances need to switch to the low beam.
But if the high beam is too bright, it is not as good as the low beam in some cases.
The visibility is poor in rainy days, so it needs to be replaced by low beam lights.
1 this number is: it rains, especially when it rains heavily, or when it is foggy, there are a lot of water droplets in the air at this time.
You also use the high beam, which may make the front white and you can't see clearly.
It's bright, but it's too bright to see clearly Get to know it.
The article "Ten Rules for Safe Driving in Autumn Rainy and Foggy Days" in Road Traffic Management magazine said: The main reason is that the optical axis of the high beam is on the high side, and the light emitted is easily diffused by water mist.
The correct way is to use low beam lights, then cooperate with fog lights, and then use white lane lines and red taillights in front of the car to guide our sight, while slowing down and paying attention to safety.
When you get close to the car in front, you need to change to a low beam.
Besides, when you are close to the car, you should also change the high beam into the low beam.
Nanjing Forestry University's paper "Analysis of the Impact of Expressway Driving Environment on Traffic Safety" has been mentioned.
When driving at high speed at night, the lights of the car may dazzle the driver, which may reduce his vision by 25%, and it takes about 3 to 4s to restore his vision.
If you drive at a high speed of 120km/h, you will drive out of100m.
If during this distance, we are dazzled and can't see anything, and there happens to be an obstacle in front, and the car in front just braked suddenly, then we hit it.
This is like: when eating hot pot, if the glasses are foggy and you can't see clearly, you just want to wipe them.
But by this time, the bottom of the soup had flown out and boiled, and you immediately hissed, because you didn't see it, you were burned.
According to the experiment, the distance caused by glare is about 100 25m. Therefore, when approaching the vehicle in front of1000 mm, it is necessary to change the high beam to the low beam.
Then I can't judge the distance. How do you know if it's 80m or 50m in the middle of the night? Right?
Count the dotted white lines on the road. National standard GB 5768.3-2009 Road traffic signs and markings Part 3: Road traffic markings.
The white dotted line has a length of 6m and an interval of 9m.
You see, there are standards, and a * * * adds up to 15m.
That is to say: empty and solid, right? You can turn off the high beam at a position about 7 white dotted lines from the front car.
When overtaking, switch between the high beam and the low beam to remind the car ahead.
Finally, when overtaking, you should use both the high beam and the low beam, not just the high beam.
The "Regulations on the Implementation of the Road Traffic Safety Law" also stipulates that when overtaking, you must use a horn or change the use of far and near lights to remind drivers ahead. In the vernacular, it means "lifting", right?
Use the horn when overtaking during the day, and use the high beam and low beam at night, mainly: use the horn at night, the sound is really too loud.
At night, the activity of cerebral cortex is relatively low, and this single repetitive operation at high speed is easy to make people sleepy.
The sudden horn sound may surprise the driver of the car in front, but it may also be an overreaction.
This is like: when you sleep at night, someone pushes you to wake you up, which is different from suddenly slapping you in the face to make you jump out of bed.
You suddenly honk the horn, and if you really scare him, he will twist left and right; Or, when he heard the horn, he was startled and stepped on the brake, which increased the safety risk.
Whether to turn on the high beam or low beam at high speed depends on the situation.
So generally speaking, whether the high-speed light is on or off depends on the situation. Under normal circumstances, there are no street lights on the highway, so it is very important to turn on the high-speed lights to ensure safety.
However, in rainy and foggy days, when you approach a car and you want to overtake it, it is safer to use the low beam.
Of course, if you have money, you can buy a high-end car directly and modify it. If it can switch by itself, then we won't say much.