When you first drove on the road, did you stare in front of you, and you couldn't even take care of your leisure time at the side windows. If you missed every unexpected situation on the road, you inadvertently missed several intersections and road signs. . Is it not enough to have two eyes?
To drive, you need to look at all directions and listen to all directions. However, when you graduate from the driving school and take the long-awaited driver's license from the coach, you will drive in the car without a coach for the first time. You will suddenly find that the situation you need to deal with is simply Diligently, it often misses a lot of important things that simply "not seen." Sometimes, you can't blame you for not seeing. Even experienced old drivers have something that you can't see in the car. You may not know that due to factors such as the physiological structure of human eyes and the design of automobiles, when people drive a car, there will be many invisible “blind spots†around the front and rear. These blind spots are the enemies of driving safety. We must beware of them. Please follow Xiao Bian to “sweep literacyâ€.
Invisible front road - front blind area
From the early days of the invention of the car, designers were accustomed to arranging the engine compartment at the forefront of the car, probably because of the design of the carriage—the power always comes from the front. Until now, most cars have a "long" engine compartment in the front, and this design actually brings blind spots in the forward vision. The higher the driver's sitting position, the shorter the engine compartment and the smaller the blind spot of the car. At present, the front blind area of ​​most passenger cars is 2-2.3 meters in front of the vehicle, and the blind area of ​​tall SUV vehicles reaches about 3 meters. How to reduce the front blind area is a matter of testing the strength of the manufacturer's design. The size of the blind area is not only related to the shape of the cabin, but also related to the front window design, the relative position of the driver's seat and the front window. In the front cabin with a steeper slope, the slightly rising waistline design not only complies with the aerodynamic principle, reduces air resistance, allows the chassis of the car to be pressed down, increases stability, but also improves the driver's frontal view angle and effectively reduces the front blind area. .
Inconvenient Column - A Column Blind Area
The window is big and there must be a window frame. In the car, the two window frames between the front windshield and the front door are called A-pillars. When you are driving a vehicle, if you encounter a turn, you will often subconsciously turn your head and look at both sides. You may not realize that it is unconsciously avoiding the blind spot of the A-pillar or B-pillar. However, the A-pillar cannot be designed to be too thin and it needs to be strong enough to support the body. The size of the blind spot of the A-pillar is not only proportional to the width of the A-pillar, but also inversely proportional to the distance from the driver's eyes to the A-pillar. Therefore, reducing blind spots in A-pillars can start from two aspects. For example, the new Fox, which has won the five-star safety test for collision tests at home and abroad, adopts a design with a low-angle A-pillar and a forward movement of the cockpit, which allows the driver's eyes to be further away from the A-pillar, and the angle of occlusion is reduced, and the reach is large. Area windshields can also provide better visibility in front of the driver.
The back of the head is not long - the back of the blind
I do not know if you have noticed that there is a rusty guy in the "Cars" that is called a tow line. He is best at driving a reverse car! However, it is really difficult for people to drive in reverse cars, because people often say "no longer eyes." Even if they turn and turn, the driver can only see the limited area within the rear window and side back window, and the rear blind area of ​​the car is very serious. Tests have shown that the rear blind zone of the traffic is between 10 and 13 meters. Fortunately, the car is not turned upside down. Only under special circumstances such as parking, it is necessary to reverse the car at low speed. Modern mini-cars are mostly equipped with reversing assistance devices. Not only are there reversing radars that discriminate distances through ultrasound, but also reversing video imaging assistance systems can make your eyes “grow†to the rear of the car, greatly reducing the risk of rear blind spots. For example, the BLIS blind spot information system currently owned by Ford New Fox can effectively assist the driver in reversing the vehicle. It will confirm whether there is a vehicle in the blind area of ​​the driver's sight through a radar sensor placed on the edge of the rear bumper. If there is a vehicle approaching, a light spot will appear on the rear-view mirror to warn the driver to pay attention, and reduce the hidden danger caused by the blind area. . But we need to remind everyone that even with a reversing radar or reversing video system, you still need to watch and listen to all directions, rear-view mirrors, rear-view mirrors, and car-reversing videos. Reversing radar sound prompts should be observed in real time. Of course, if you think that these auxiliary devices are not reliable, or let you miss them, follow the coach's instructions: Turn it back.
[parallel killer - side blind area]
In addition to the two huge blind spots before and after the car and the A pillar blind spot, there is a dangerous area that needs attention. This is the side blind zone. The position of the rear blind zone is very ambiguous. The outside rearview mirror has a limited view angle and the rearview mirror is not visible. As soon as it turns around, it is blocked by the B pillar (the pillar between the front and rear doors). This blind spot is often the easiest place to ignore for street killers: When you are going to line up, suddenly the horns are behind you! It turns out that you have a car on the left rear, next to the driveway!
How to avoid the parallel security problems caused by the side blind area? Car manufacturers have introduced the BLIS side blind area information system. Take BLIS Blind Spot Information System equipped by New Fox as an example. It uses a radar sensor placed on the edge of the rear bumper to confirm whether there is a vehicle in the blind spot of the driver's sight and warns the driver by the light spot on the rearview mirror. Pay attention to any vehicles that are approaching and already in the blind spot, and reduce the hidden dangers caused by the rear blind zone. This is more than a small wide-angle lens attached to the rearview mirror. However, don't forget to look at the rearview mirror while you are on the line!
ã€Be careful of the blind area of ​​the naked eye, please keep it safe! 】
In addition to these blind spots caused by the car design, our naked eye has a blind spot because of the physiological structure. There is a blind spot in human eyes: at the beginning of the optic nerve, there is a white round bulge called the optic nerve. plate. The nerve plate is the place where nerve fibers enter and exit. There are no photoreceptor cells here, and no nerve pulses can be generated. Therefore, light cannot be sensed. Therefore, when the image of an object falls on this blind spot, people do not feel the image and it is prone to danger.
You may think that the speed of driving is so fast, the scope of blind spots is so small, and even if objects fall into the blind spots, they will soon move out. Yes, sitting on a fast-moving car, the blind-spot problem seems to be negligible. However, as the speed increases, the ability of the human eye to recognize objects will greatly decrease. Studies have shown that the driver's visual focus shifts to the distance as the vehicle speed increases. When the vehicle speed increases to 97km/h, his focus will be at a point 610m ahead. In addition, as the vehicle speed increases, the driver's vision of close-up details becomes blurred. When the speed reaches 97km/h, the response to close-up details is close to zero, and the driver's perception of the front and rear views of the vehicle will also be felt. As the vehicle speed decreases, the range of 90° to 100° can be noticed when the vehicle speed is 40 km. When the vehicle speed reaches 72 km/h, the range of 30° to 40° on both sides can be noticed, and the speed reaches 97 km/h. At h, the viewing angle on both sides is reduced to below 20°. This means that objects outside the 20° angle are easily ignored. So, no matter how good your eyes are, please also keep a safe speed, this is the key to the car "literacy"!
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