[Turn] Driving schools do not teach knowledge (1) Use the external mirrors to determine the distance of the car

[Autohome car skills] The rearview mirror is a simple and important part of the car, the vehicle is driving on the road, the rearview mirror especially the vehicle's exterior mirror use frequency is absolutely the highest. Although it seems humble, but it is the driver's "eye", no it even directly affect the safety of the road, then the small exterior mirrors you will use it? Today, we will explain how to adjust the external mirror and how to use the rearview mirror correctly to judge the distance of the car.

Note: This article will be the main and everyone said the use of external mirrors and determine the distance between the method, about the interior mirrors we will be alone with a whole piece of the content of the article to introduce.

How to adjust the exterior mirrors?

There is no uniform standard for the adjustment of rearview mirror, as long as the visual blind area can be narrowed as far as possible, the driver observes the principle of comfort. Of course, there are many of the network on the mirror adjustment of the introduction, we also combined with their own experience for everyone summed up the following points.

"Click here to see how to properly adjust the sitting

First, the driver will adjust the seat to the appropriate position, when looking at both sides of the rearview mirror, the rear-view mirror, can be seen from the mirror of their own body, and the body area not more than 1/4 of the mirror is a reasonable range.

The second step is to adjust the high and low, in principle, from the rear view mirrors to observe the car scene, so that the distant plane in the center of the Mirror. But some friends are accustomed to the right side mirror to lower the angle, so as to better in reversing the right side of the road to observe, this approach is not wrong, but the angle is not too low, the distance horizon as the benchmark, the surface area of not more than 2/3 of the mirror area is a reasonable range.

The central rearview mirror in the car is relatively easy to adjust, maintaining the correct posture, mapping the rear window to the center of the rearview mirror, and keeping the horizon in the rearview mirror in the center of the Mirror.

Effect and effect of exterior mirrors with large vision

Some in order to reduce the area as far as possible or feel that their exterior mirrors are too small, many car owners will be after the purchase of large-scale exterior mirrors. Large field of view rearview mirror is through the principle of convex mirror, will expand the imaging range to the maximum possible narrowing of the visual blind area, from this point of view, the effect is obvious, but the mirror in the scene is deformed, distance sense will cause deviation. In addition, some brands of cars in the exterior mirrors are also used in the external mirrors with curvature, to increase the external visual area.

"See the dashed line on the rearview mirror, the left side of the dotted line is similar to the big view"

"The difference between the exterior mirrors"

"The difference between the interior mirrors"

Of course, no matter what kind of rearview mirror, no matter how the adjustment is just as far as possible to narrow the blind area, the blind spot is unavoidable, so when necessary to turn back is the most effective way.

How to judge the distance of the car by the exterior mirrors?

We'll talk about the adjustment of the rearview mirror. The use of rearview mirror is used to observe the rear, but how to judge the distance through the rearview mirror to serve their own driving behavior, may require some skills. There are many in the network through the rearview mirror to determine the distance of the small tricks, such as the car occupied the rearview mirror area and distance relationship, as to whether the method is accurate, today we also experienced a hand.

The use of the car for the Jeep guide and the old Mazda 6, the choice of these two cars is mainly considered a typical sedan, one is an SUV (hatchback), so the use of the exterior mirrors on the analog representative of the situation of most cars. In the actual mode test, the hatchback and sedan in the rearview mirror to determine the distance between the situation is the same, so the following will be unified said outside the rearview mirror in various cases to determine the distance between the situation.

Scenario 1: Rear car full exterior rearview mirror

We put two test vehicles in turn for testing, when the rear car filled with rear-view mirrors, according to the network description, the front and rear car gap should be 3 meters, the fact is not so? we got off to take measurements. When the guide in front of the car is 3 meters apart, but the Mazda 6 in the case of the distance increased to 3.5 meters, it should be said that the network is basically true. When the rear-view mirrors are full, the car is close enough to be in danger.

Scene 2: rear car full of rearview mirror 2/3

Through the experiment, the Guide and Mazda 6 respectively in the front, the distance from the rear of the car is 5.5 meters and 6 meters, and the network described in the distance of 5 meters, in the daily driving, such a distance is relatively safe.

Scene 3: rear car full of rearview mirror 1/2

Through the experiment, the Guide and Mazda 6 respectively in the front, the rear car full of mirrors 1/2 when the distance from the rear car is 7 meters and 8 meters, and the network described in the distance of 9 meters is different. In the daily driving and slow speed, such a distance can be carried out and line operation, but the speed is faster or high-speed road, such a distance to overtake or the car in front of the brakes is very prone to accidents occur.

Scene 4: rear car full of rearview mirror 1/3

Through the experiment, the Guide and Mazda 6 respectively in the front, the rear car full of mirrors 1/3 when the distance from the rear car is 10.5 meters and 11.7 meters, and the network described in the distance of 12 meters is not much. In the daily traffic such distance is basically a relatively safe distance, but in the highway or speed of the environment, and the line still need to be extra careful.

Experiment Summary:

　　Through the experiment is not difficult to see, the network on the rearview mirror to determine the distance between the tips have a certain basis, but there will be some differences between the models, such differences are mainly from the mirror area of the difference, which requires special attention. For the large-scale SUV and MPV, the rear car needs to be close enough to fill the rear-view mirror, and the car because the rearview mirror is small, so it is easy to get close to the car "fill", so the actual operation should be treated differently. However, as far as possible, the distance between the vehicle and the line to be more secure, from the experiment, from the rearview mirror after observation of the car is less than 1/3 or even more hours in the line is relatively safer.

Change of rearview mirror with large vision

As mentioned above, in order to reduce the visual blind area, many friends choose the large vision rearview mirror. Although the blind area has been reduced, the working principle of the large vision mirror will change the shape of the reflected object in the mirror, and the judgment of the distance will be biased, and whether the vehicle using the large vision mirrors can follow this standard of judgment, with doubt we have conducted the second Test. Note: For the purpose of the test I have converted the Mazda 6 to a large view exterior rearview mirror.

Scenario 1: rear car full rearview mirror

Through the experiment, when the rear car full front rearview mirror, at this time the car has been the tail-to-side, without a bit of space, can be seen in the large field of view rearview mirror in the improvement of visual field, the illusion of distance also exists.

Scene 2: rear car full of rearview mirror 2/3

At this time, do not add large field of view outside the rearview mirror, the second condition two cars should be around five meters apart, but the use of large field of view rearview mirror, two car spacing is only 2.4 meters, the distance is reduced by half.

Scene 3: rear car full of rearview mirror 1/2

In the non-installation of large vision mirrors when the second state giant rear car has a distance of about 8 meters, in the use of large field of view rearview mirror, the spacing is only 3.2 meters, distance greatly shortened.

Scene 4: rear car full of rearview mirror 1/3

By experiment, the car was only 5.8 meters apart, and the distance between the front and rear mirrors was reduced by half.

Experiment Summary:

　　Although the large field of view mirrors can actually reduce the blind area, increase the field of vision, but because of the different mirror image, the judgment of the distance will be seriously distorted, so the choice of large-vision rearview mirror owners in the actual driving process, but also to set aside enough space for vehicle operation, so as to avoid danger.

Scientific use and adjustment of the rearview mirror can effectively improve the sight, reduce the visual blind area. But rearview mirror is not omnipotent, no matter what kind of rearview mirror products, no matter what kind of adjustment angle can not completely avoid the existence of blind area, so observe, if necessary, turn to observe is the most effective way.

At the same time the rearview mirror, as the third eye of the driver, plays a vital role in the driving, understand the form of rearview mirror, accurately grasp the distance between car and car, to ensure the safety of driving. (Wen/Autohome Guo Yan)

　　Note: The rearview mirror size of each car may be different, but the basic usage is similar, if you have a better way to use can tell us behind the article.

[Turn] Driving schools do not teach knowledge (1) Use the external mirrors to determine the distance of the car