Every time there is a typhoon, almost all car owners cannot drive.
Some time ago, Chandu swept through the free shipping area. On a windy and rainy day, everyone went to work without getting wet. Naturally, the traffic volume during the morning rush hour soared. The result! Traffic accidents on this road have not stopped since morning.
It's like there is a curse that makes many car owners no longer able to drive when it rains or foggy.
And some car friends in the Modu Car Club where Brother Tai belonged suddenly started arguing about the topic of "fog lights and double flashers."
Some riders believe that double flashlights are only allowed to be used in extremely dangerous situations and cannot be turned on in rainy and foggy weather. It is illegal to use double flashers indiscriminately. The best way in rainy and foggy weather is to turn on the width lights and rear fog lights.
Another group of car owners believe that since the double flashing lights are used to remind other vehicles that "there is a dangerous situation ahead", driving in rainy and foggy weather is inherently dangerous. Turning on the double flashing lights also reminds the vehicles behind to slow down. It also depends on the specific situation. Certainly.
In the end, no one can convince anyone of this kind of truth about father-in-law and mother-in-law, so on the topic of whether to turn on fog lights or large double flashers on rainy and foggy days. Tagote wrote a special article to have a good chat with the gentleman in a serious way.
How to choose lighting in rainy and foggy weather! To prevent the car behind you from blindly charging~
Is it right to use double flash in rainy and foggy weather?
Only open when visibility is less than 100 meters!
Is it right to use double flash in rainy and foggy weather?
How do we understand this common and controversial topic? Let’s put aside the various opinions and take a look at the domestic regulations on the use of double flash flashes in heavy rain.
Article 81 of the domestic "Regulations on the Implementation of the Road Traffic Safety Law" is written like this.
Motor vehicles driving on highways must abide by the following regulations when encountering fog, rain, snow, dust, hail and other visibility meteorological conditions:
When the visibility is less than 200 meters, turn on the fog lights, low beam lights, side lights and front and rear position lights, the vehicle speed must not exceed 60 kilometers per hour, and keep a distance of more than 100 meters from the vehicle ahead in the same lane;
When the visibility is less than 100 meters, turn on the fog lights, dipped beam lights, side lights, front and rear position lights and hazard warning flashers, the vehicle speed must not exceed 40 kilometers per hour, and keep a distance of more than 50 meters from the vehicle ahead in the same lane;
When the visibility is less than 50 meters, turn on the fog lights, low beam lights, position lights, front and rear position lights and hazard warning flashers. The vehicle speed should not exceed 20 kilometers per hour, and leave the highway as soon as possible from the nearest exit.
In other words, the regulations encourage turning on double flashers in rainy and foggy weather, but it only applies to highways.
However, under most traffic police, this law has become a statement that supports turning on double flashers in rainy and foggy days, and has always been the mainstream behavior to remind car owners to turn on double flashers in rainy and foggy days. However, many people miss an important point!
The actual regulatory requirement is that the purpose of a low-visibility driving environment is to:
Turn on the lights! Turn on all your car lights!
Traffic regulations require all lights to be turned on when visibility is less than 100 meters! All lights! All lights!
More than once, Brother Tai saw many cars on the highway on rainy days turning on their double flashers without turning on any lights. Then they drove back and forth on the highway to change lanes, passing anyone they saw. As everyone knows, most Japanese cars cannot recognize the car behind them when using the turn signal with the double flash activated. At this time, changing lanes quickly is undoubtedly a torpedo behavior! (European cars have this problem)
After solving the high-speed problem, there is a new problem. Is it no longer necessary to use double flash on non-high-speed roads?
Article 58 of the Traffic Regulations Implementation Regulations also provides necessary explanations. Motor vehicles must turn on their headlights and position lights when the lighting is poor at night or in rain, snow, fog, sand, hail and other weather conditions. , it is prohibited to turn on the high beam when the distance between the front and rear vehicles is close. Fog lights and hazard warning flashers (double flashes) should be turned on when visibility is low.
Therefore, the condition for turning on the double flashers is "visibility". Whether it is heavy rain, heavy fog or a sandstorm, as long as the visibility is reduced, all lights of the vehicle must be turned on. Only when the visibility is less than 100 meters can the conditions for turning on the double flashes be met.
So the traffic regulations have been made clear to everyone, it is not impossible to use double flash! But you have to figure out when it will open!
Turn on fog lights and double flash on rainy days
Average visual distance can vary by 13 meters
Now that everyone knows that double flash lights must meet visibility requirements, the second question arises, why should the fog lights be placed in front of the double flash lights and turned on?
The answer is obvious at a glance: fog lights provide better visibility!
Chang'an University School of Automotive published a paper in the 2017 issue 28 of the journal "Science Technology and Engineering" "Experimental Research on the Impact of Different Light Penetration Effects on Driving Safety in Rainy and Fog Weather", which actually tested the performance of double flashers and fog lights in rainy and foggy weather. How big is the difference in visual distance?
In the description and research of the test environment in this paper, the visibility in rainy and foggy days was firstly calibrated. That is, the real visibility of highways in rain and fog environments not controlled by highway traffic police is generally maintained between 150-200m.
In this case, four sets of lights were used to measure the recognized distance:
Without lights: the recognized distance is 87.6-163.5m, with an average value of 124.8m.
Only the rear lights are turned on: the recognized distance is 110-150m, and the average value is 137.6m.
Only double flash is enabled: the recognized distance is 138.2-183.2m, with an average value of 158.1m.
Only turn on the fog lights: the recognized distance is 147.6-200m, with an average value of 171.6m.
Among them, most of the fog lamp test data exceeded the 200m test limit of the test radar.
The conclusion drawn is very clear. The average recognition distance of fog lights has increased by 13.1m compared with dual flash, and has increased by 34m compared with only tail lights. Therefore, when visibility is poor in rainy and foggy days, fog lights must be turned on more than double flashes!
A reminder to the cars behind you: blind man! There is a car in front of you!
Driving in rainy and foggy days
Be sure to remember these two principles
To say that Brother Tai has a long driving experience, he actually only has 12 years of driving experience, which is much younger than many car owners.
However, after driving through bad roads and deserts in the south China sea and north on work days, I had the experience of driving in heavy rain several times. Brother Tai summed up the principle of driving in heavy rain as much as possible.
When driving in a heavy rain, in principle, avoid driving if you can and try to avoid driving in heavy rain.
As long as conditions permit parking, the first option is to find a safe place to stop and wait for the heavy rain to pass. If you are already on the road and it is really inconvenient to park and you can only keep going, then see the next step.
Coat the glass in advance and replace the wipers
Brother Tai experienced a heavy rain on a highway in Qinghai. The highway is not very wide, with four lanes at the top and bottom. When driving into a rainstorm area, the most affected thing is the sight. The darkness in the rainstorm area is not the same as when it gets dark in the evening. The problem can be solved by shining headlights. During heavy rains, the vehicle lights cannot shine far. Driving in poor light will cause a strong emotional pressure on the driver. I couldn't see a few meters ahead, and I kept driving at a certain speed, always worrying about something unusual on the road ahead.
Fortunately, the windshield has been treated with a water-repellent coating. The highest setting of the wiper can still be effective in heavy rain. The windshields of other cars in the same category are just a layer of water curtain. When the wiper sweeps across it, you can clearly see the road ahead. , and then there was a water curtain again, and I could only see the road ahead intermittently.
At this time, don't think about overtaking or changing lanes, just stay in your own lane and drive forward.
In addition, when driving on urban roads, it should be convenient to park and wait. Be careful not to park or drive into low-lying areas.
The vast majority of drivers can still drive without knowing how deep the water is on the road, and it is even more impossible to judge the water depth in each section of the road. During heavy rains, the water level on low-lying roads rises at a speed you can’t imagine. If drainage is not good, it may take a few minutes. The water level can rise to dangerous levels. You have to give in when it’s time to give in. You can’t take your own life lightly.
Welcome everyone to discuss with Brother Tai in the comment area.
See you next time~
