When the vehicle is running, the front gear switches to reverse gear, and the throttle is not loose.

Automatic or manual?

In the case of manual transmission, the gearbox without synchronous gears will cause the gears to impact and the tires to lock. If there is a synchronous gear, it will not be able to enter the gear, or if the clutch is loosened, it will lock and stall, and if the power is large enough, it will cause reverse slippage.

Automatic car direct into reverse gear due to the reversal of the transmission mechanism, will cause the gearbox solenoid valve or other mechanisms to be damaged by excessive impact, if not broken, it is directly because of the reverse output of the cause of rapid deceleration. (It is also possible that if the speed is higher than a certain speed, the transmission will lock and you will not be able to enter reverse gear).

Cars with a higher degree of automatic communication may automatically brake slowly until zero speed and then engage the engine for reversing due to the automatic control system or prohibiting gear shifting.

In addition, most automatic transmissions have a feature, that is, there is a one-way locking function, the vehicle does not match the direction of the gear due to external force, it will drive the braking mechanism in the gearbox, in order to prevent rolling. This is the key.

This question is a bit harder!

The layman says a little layman's words, don't laugh, oh, I want to solve this problem, it should be divided into two parts, one is from forward to stop, the other is from stop to backwards, the key is how to determine the stop point, the car switches from the forward state to the reverse, artificially gives instructions, the car starts braking, and a device is made to automatically detect the point of stopping, and when the stop point is detected, it will automatically enter the reverse gear and perform the operation to the car, so that there will be no "sudden braking" phenomenon.

Asking and learning together, I often have a sense of frustration.

The reverse of the automatic transmission is generally under the parking gear, and the second gear from the front to the back is the reverse gear (which varies according to the model), that is, the R gear, and the car gear will also be displayed on the dashboard of the car when it is hung in the reverse gear.

Automatic car reversing steps:

Before reversing, you need to stop the car completely and then put the gear in R gear.

Observe the front and rear panorama, and pay attention to pedestrians, bicycles, motorcycles or other vehicles. Let him leave first, then reverse. Pay special attention to whether there are any children in the rear. It can be seen through the reverse mirror, left and right rearview mirrors.

Many cars are already equipped with reversing radars, which make it easy to know if there are pedestrians or obstacles behind the car. The general obstacle alarm of reversing radar is divided into three levels, and when the distance is meters, the beep alarm is relatively gentle. When the distance is 1 meter, a relatively rapid beep alarm.

Within meters, an emergency beep alarms. Beginners must first familiarize themselves with these alarm sounds.

There are also cars equipped with reversing images, and these auxiliary devices greatly relieve the nervousness of novices when reversing. It has a clear understanding of the situation behind the car when reversing.

When the surrounding environment is determined, slowly release the brake, but still put the right foot on the brake to control the reversing speed of the car. Have the car reverse at the speed of a pedestrian. Smooth road surface does not need to step on the accelerator, such as when encountering steps or obstacles, you can slowly and gently press the accelerator, and after crossing the obstacle, you should brake and slow down.

Parking and reversing method in the side parking space.

First of all, after the start of reversing, the steering wheel clockwise, also to the right to play two circles, and then slowly reverse, then pay attention to observe the left rearview mirror, when you see the left rear wheel pressed to the outer edge of the parking space, you can slow down and reverse, and then quickly turn the steering wheel back two times, after the left rear wheel completely enters the parking line, the steering wheel is counterclockwise, that is, to the left two circles, and then continue to reverse, after the body is straightened, the steering wheel is back in place. Then move the car back and forth to the middle of the parking space. If you are a novice, it is recommended to reduce your speed or stop when you turn the steering wheel.

No, if you have a new car, it is recommended that you go to a 4S store to check it out.