How to judge the distance of the body from the sideline 30 cm in the driving test subject 2, and how

Generally, the screws of the wipers are used to align the edge of the road.

You can try a few more times when practicing, because everyone's sitting height is different and will be a little off.

You can first look in the mirror to determine whether it is 30 cm away from the sideline, and then open the door to see the actual situation.

In the driver's license test, there are many places that require the distance between the body and the sideline to be within 30 cm, so how to grasp this 30 cm? Come and take a look at this to help you find this 30 cm accurately!

The so-called 30 cm refers to the distance between the body and the yellow line, that is, 30 cm.

1. The test items that need to be 30cm away from the sideline for the subject 2 exam are:

1. Side parking.

2. Ramp. The distance between the 30 centimeters of the ramp and the yellow line should not exceed 30 centimeters, otherwise you will have to deduct 10 centimeters.

3. Turn 30 centimeters at a right angle.

4.Curve driving.

5.Reversing into storage.

2. How to correctly judge 30 cm

Method 1: Make the third of the front of the car coincide with the right sideline. How do you find a third? It is to divide the car into three equal parts, you can make a mark by yourself, and after practice, remove the mark and slowly familiarize yourself with this point.

Method 2: Toho looks at the wiper so that the highest point of the wiper coincides with the sideline.

Method 3: The right stiffener aligns with the edge line to move forward, which is also a more commonly used method.

Method 4: I don't use a lot, but it is still easier to find a point, that is, the gap of the wiper coincides with the sideline.

Actually, it's not just the subject 2 exam, it's the subject 3. 30 cm is also used for projects such as pulling over, which shows the importance of 30 cm. For people who have just learned to drive, it is still a little difficult to correctly judge 30 cm, as long as you understand more in the usual training and find your own method, it will not be as difficult as you imagined.

Method 1: Look at the straight line in front of the car about the right third of the front of the clear shed, at this time the body is just 30 cm from the sideline.

Method 2: The wiper is the standard equipment of every car, and when it is flat, the protruding part of the wiper is obvious. During the driving school test, the distance of the car from the sideline can be judged according to whether the position of the wiper protrusion coincides with the right sideline.

When the two coincide, the distance between the two is exactly 30cm.

Method 3: The position where the raised part of the wiper on the left coincides with the white line on the ground on the right is that point, and then look at the right rearview mirror to confirm.

1. The right third of the front of the car.

The front of the car is divided into thirds, and when the third of the front of the car coincides with the right sideline, the body is exactly 30cm away from the sideline.

2. Look at the wipers.

When the notch of the wiper coincides with the sideline, the body is exactly 30cm away from the sideline.

3. Look at the stiffener on the right side of the front of the car.

The right stiffener coincides with the sideline, and it is exactly 30cm away at this time.

The 30 cm position of the second margin of the subject can be measured by the raised rivets of the wipers, the third of the front of the right side, and the distance between the finger widths of the rearview mirrors, and the specific application is as follows:

1. Wiper raised rivets

Side parking, left right-angle turn, ramp fixed-point parking need to keep a distance of about 30cm between the body and the road sideline, when the raised part of the wiper point coincides with the right road sideline, the distance between the body and the side line is about 30cm.

2. The third of the front of the car on the right side

When making a curved second turn or right-hand turn, the distance between the vehicle and the left road edge is 30 cm can be measured by the front of the car on the right. The front of the car is divided into three equal parts, and the right one-third of the front is on the right sideline, and the distance between the body and the sideline is about 30cm.

3. The rearview mirror refers to the wide distance

This measurement method is usually applied to reversing into the warehouse, in the process of reversing into the warehouse, to the step that needs to observe the rear wheel and the storage angle, you can observe whether the body and the storage angle are kept at a distance of about 30cm through the rearview mirror. When viewed from the rearview mirror, when the distance between the body and the storage angle is kept at a finger's width, it is about 30 cm. (Note:.)

Width here refers to the thickness of the fingers, not the length).

How to find the most accurate 30 cm in the second section?

If you want to find a few 30 cm points in the subject 2 exam, you can measure them during the practice, which is the most accurate. You can deliberately put the body adjustment in the most standard 30 cm position, and then sit in the car to observe the reflector, remember how long this 30 cm is, and then practice according to this distance [no measuring tools can be roughly measured with feet, 40 size shoes are equivalent to 25 cm (cm)].

- 30 centimeters of the warehouse

In the process of reversing into the warehouse, to the step that needs to observe the rear wheel and the corner of the car, if the distance between the rear wheel and the corner of the car is almost 30 centimeters away, then there is no need to correct the direction, everything can be reversed according to the normal steps. If the distance between the wheel and the library angle is less than 30 cm, you should learn to fine-tune, you can return to the steering wheel a little (according to the actual situation), so as to prevent the body from turning too far back and pressing the line.

-- Fine-tuning remedial measures for inventory reversal

As shown in the figure below, when reversing to this angle, the trainee should be able to see the distance between the rear wheel and the garage corner through the rearview mirror. At this time, the radius of the left side is large, and the wheel is easy to press the right sideline, and the first reaction in this case is to find that the steering wheel is late.

As shown in the figure below, in this case, the steering wheel is generally returned to the center, and then the car is shunted. But at this time, the right side of the line is imminent, and what should be done should be not to return to the steering wheel, so that the parking space continues to fall backwards to the left.

When the position of the vehicle reaches a slightly inclined angle as shown in the figure below, the steering wheel is quickly corrected, and the body will retreat diagonally according to the current state.

When reversing to the situation shown below, that is, when the distance between the two rear wheels of the car and the sideline is almost equal, immediately turn the steering wheel to the right and let the parking space be thrown to the right.

Look in the rearview mirror, and when the body is almost parallel to the garage sideline, quickly return to the steering wheel, and the car can be perfectly reversed into the garage.

The distance of 30 cm between two subjects can be measured with the rivet lifted by the wiper, the right front third of the car, and the finger width of the rearview mirror. The specific applications are as follows:

1.Wiper raised rivets.

For side parking, left right-angle turns, and ramp fixed-point parking, it is necessary to keep the distance between the body and the curb about 30cm. When the raised part of the wiper point coincides with the edge of the road on the right, the distance between the body and the edge is about 30cm.

2.The third of the front of the right car.

When making the second turn and the right right-angle turn on the curve, the distance between the body and the left side of the road is 30cm, which can be measured with the right front. The front of the car is divided into three equal parts, with the front right third at the right line, and the distance between the body and the side line is about 30 cm.

3.The rearview mirror refers to a wide distance.

This measurement method is typically applied to reversing and put-away. In the process of reversing into the garage, when you need to observe the rear wheel and the corner of the garage, you can observe whether the distance between the body and the corner of the garage is about 30cm through the rearview mirror. When viewed from the rearview mirror, the distance between the body and the corner of the garage is about 30 cm when it is kept finger width.

Note: The width here refers to the thickness of the finger, not the length).

How to find the most accurate cross-section of 30 cm?

If you want to figure out how many 30cm there are in the subject 2 exam, you can measure it during the practice process, which is the most accurate. You can adjust the body to the most standard 30cm, then sit in the car and look in the mirror to remember how long this 30cm is, and then practice according to this distance.

.30 cm from the warehouse.

In the process of reversing into the garage, pay attention to the rear wheels and the corners of the garage. If the distance between the rear wheel and the corner of the garage is almost 30 cm, there is no need to correct the direction. Everything is reversed according to the normal steps.

If the distance between the wheel and the corner of the garage is less than 30cm, learn to fine-tune. You can turn the steering wheel a little back (depending on the actual situation) to prevent the body from turning too much backward to press the line.

.Remedies for fine-tuning of warehouse dumping.

As shown in the image below, when reversing to this angle, students should now be able to see the distance between the rear wheel and the corner of the garage through the rearview mirror. The left radius is too large. In this case, the wheel is easily pressed to the right line. In this case, the first reaction is to find that the steering wheel is late.

As shown in the figure below, in general, turn the steering wheel back to the correct position, and then shunt the car. However, at this time, it is imminent to press the line on the right. What we should do is not to turn the steering wheel to the right and let the parking space continue to fall back to the left side.

When the vehicle's position reaches the slight tilt angle shown in the figure below, the steering wheel is quickly straightened, and then the body reckons back diagonally according to the current state.

When reversing to the situation shown below, that is, when the distance between the two rear wheels of the car and the sideline is about the same, immediately fill the steering wheel to the right and let the parking space swing to the right.

Look in the rearview mirror. When the body is almost parallel to the garage sideline, quickly straighten the steering wheel. At this point, the vehicle can be perfectly reversed into the garage.

In the learning process of subject two, it is very important to find the 30 cm distance of the right side line, whether it is the reverse garage or the ramp fixed-point parking and starting, it is also often used in the actual driving process in the future, so it is said that finding the 30 cm distance of the right line is the basic skill of driving. So, how can you find the distance of 30 cm from the right line?

1. Find the premise of 30 cm distance from the right line. Find the right line 30 cm distance to observe through the rearview mirror, so to ensure that the right line 30 cm distance is accurate, you must first adjust the seat and rearview mirror, adjust the rearview mirror to your normal observation of the line of sight.

2. Find the way to find the 30 cm distance from the right line. Here, three methods are introduced:

1. Judge by looking at the hood of the front of the car. When the body is parallel to the right side of the road, and the right third of the hood coincides with the right side of the road, the body is basically 30 cm away from the right side line.

2. Judge by observing the wipers. The driver remains upright and observes the car's windshield wipers. When the protrusion of the wiper coincides with the right side of the road outside, the distance between the body and the curb is just about 30 centimeters.

3. Judge by looking at the right rearview mirror. When the body is parallel to the right side line, and the outermost point of the right front door handle of the vehicle is tangent to the right side of the road, the distance between the body and the right side line of the road is exactly 30 cm.

There are many ways to find the 30 cm distance of the right sideline, as long as you master one of them. It should be emphasized that in order to really find the 30 cm distance of the right line, you must combine the above methods with your own driving practice, observe more, practice more, in order to practice makes perfect.

What else to ask, didn't your coach teach you.

In fact, 30 cm is quite simple, others may be more difficult to understand, to tell you the easiest way, a lane, according to the specifications of the test car, the position facing the driver is in the middle of the road. The right one is about 30 centimeters.