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Did you know that the car will be out of the car after a few centimeters of flooding under conditions such as typhoon or heavy rain? Explain according to different degrees

table of contents
●Do you know what the effects of different water depths are?
●【Water depth 30cm】It may be impossible to drive if the exhaust pipe is submerged
●【Water depth 50cm】It may not be possible to open the door
●【Water depth 100cm】The vehicle may float and be washed away
●The water is only as deep as the "vehicle height" to drive safely

Do you know what the effects of different water depths are?


©njmucc/stock.adobe.com

Typhoons or short-term heavy rains bring abundant rainfall, and some places cannot drain the rainwater, which will lead to flooding.

Depending on the flooding height, even cars with a certain weight can be washed away. But do you know? In fact, a small amount of water is also potentially dangerous.

This article will roughly divide it into three stages to explain the effect of soaking to a few centimeters on the car.

[Water depth 30cm]It may be impossible to drive if the exhaust pipe is submerged


Schematic diagram when submerged 30cm

If the water depth exceeds the height of the vehicle, water may enter the vehicle, causing the risk of electrical failure, and if the water floods in from the exhaust pipe, it will cause damage to the engine room.

If the engine room is damaged, failures such as "automatic sliding doors and power windows cannot be started", "engine and motor stop and cannot be started again" will occur.

If the battery used for driving electric vehicles (BEV) and hybrid vehicles (HEV, PHV) is soaked in water, there is a risk that the vehicle will not start.

【Water depth 50cm】It may not be possible to open the door


Schematic diagram when submerged 50cm

If water gets under the door, the water will exert pressure from the outside of the car, making it difficult to open the door from the inside.

【Water depth 100cm】The vehicle may float and be washed away


Schematic diagram when submerged 100cm

If the tires are completely submerged in water, the vehicle body will float, making it difficult to travel. In addition, if the water depth exceeds half of the door, it is almost impossible to open the door from the inside of the car.

If the height of the flooded water inside the car is the same as that outside the car, and the water pressure inside and outside the car is not much different, the door can be opened from the inside of the car.

In addition, if there is a window breaker, you can also evacuate outside the car by breaking the window. However, the front windshield and some windows are made of laminated glass, so they cannot be broken with a window breaker. The glass material is different for each model, you can check with each car manufacturer.

Safe driving only when the water depth reaches "vehicle height"


Source: Ministry of Land, Infrastructure, Transport and Tourism, Japan
※Depending on the shape and design of each vehicle, the impact of flooding on the vehicle varies. Pay special attention to cars with lower heights that are more susceptible.

In the "Flooded Road Test" conducted by the JAF (Japan Automobile Federation), a 2,000cc class car can drive on a flooded road with a water depth of 30cm, but the engine will turn off on a road with a water depth of 60cm.

The 30cm here is explained by the picture released by the Ministry of Land, Infrastructure, Transport and Tourism of Japan, which is roughly equivalent to the height of the car above the ground.

Danger varies with driving speed and the presence or absence of water flow

The water depth is only 30cm, but if the vehicle is traveling at a high speed, the water splashes and waves splashed by the vehicle may enter the engine room through the air intake, and the worst case may cause the engine to stall.

In addition, in the case of low vehicle height or water flow, even if the water depth is not high, the vehicle may be washed away, and the risk will be greatly increased.

Original source:Do you know how many centimeters a car should be flooded out due to a typhoon or guerrilla rainstorm?Commentary by degree
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Dreamer is what I am, but unlike many, I struggle to make my dreams come true. I own, seo, admin and site editor. I am a father, married, Christian, Northeastern/Brazil and Libran. I love cars <3

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