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When driving for a long time in a car, many people sit in the passenger seat next to the driver and recline the backrest.

However, it has been found that the risk of injury in a crash increases by up to 50 times if the person lays down excessively.



This is reporter Kim Bo-mi.



<Reporter> When



running for a long time, it is not uncommon for a companion to recline the backrest.



[Eunjin Eun / Songpa-gu, Seoul: (How are you in the passenger seat when driving long distances?) Almost lying down.

I'm just thinking about sleeping because I'm tired. I'm wearing a belt...

.]



I tried a crash test at 56 km/h to see if there is any problem with safety.



In the event of a crash with the backrest at a normal angle, the seatbelt and seat hold you in place, and the airbag protects your head.



This time, the backrest was reclined to 38 degrees.



After the seat belt does not support the body, the head is severely bent, and after colliding with the airbag, the entire body bounces off the slanted seat.



When the backrest was reclined at 38 degrees, the impact on the head and neck was 3.4 times and 2.7 times higher, respectively.



The risk of brain damage increased by 26.7 times and the risk of neck injuries increased by 50 times.



When I sit up properly like this, the seat belt tightens my body, but when I sit on my back and ride it, I can see that there is enough space for one fist to go back and forth like this.



[Yoon Seong-moon / Korea Consumer Agency Safety Monitoring Bureau Investigator: If you stop while lying down, you may fall under the (seat belt) due to inertia.]



If you are tired from long-distance travel, it is better to use a resting place or rest area for drowsiness rather than lying on a chair to rest.