Why does the car seatbelt have shoulder protection that the plane does not?

If the seatbelt has shoulder protection, the passenger safety will increase significantly, but .

According to a report from the US Federal Aviation Administration, every year an average of 58 passengers are injured due to not wearing seatbelts.

In addition, out of 298 serious injuries caused by shaking aircraft (statistics from 1980 to 2008), there are 184 cases where people in distress are flight attendants who have to travel on airplanes to serve passengers. .

Flight attendants often suffer from injuries because they often have to travel on airplanes.

Most accidents occur at a height of more than 9,000 meters, meaning in flight, not at takeoff or landing. Therefore, it is best to wear the whole cord throughout the trip even though it is inconvenient.

But specifically, how does seat belts help you?

Richard McSpadden from the AOPA Aviation Safety Institute said: "Many passengers think that a plane accident rarely occurs. I agree with them. However, if misfortune happens, the consequences are frightening, even when the aircraft is only disturbed for a short time ".

The scene was disturbing when the plane was shaking at 9,000m, on an Aeroflot flight from Bangkok in November 2017.

An American author and stewardess, Heather Poole, agrees. Poole said: "People often think that when the plane vibrates, the plane will be pulled up. In contrast, the plane will drop sharply and suddenly.

Then, if you fasten your seat belt, it will keep your body in the seat. Your position compared to both aircraft has not changed and thus less risk of injury . On the other hand, if you are loosening your whole body, you may be knocked up and banged on the ceiling of the plane, suffering from a serious injury. "

Passengers in yellow shirts do not wear seat belts.Green jerseys are protected by safety belts.

In 2013, Asiana Airlines flight 214 crashed while landing in San Francisco, killing three people.

Later, the medical examiner David King said: "Among them, two passengers were knocked off the plane because they did not fasten their seatbelt when the plane dropped (and encountered an error). They were most likely kept. Stay on the cabin and survive if you wear your seatbelt. "

The scene of the accident happened 214 Asiana Airlines.

If so, is the shoulder protection more secure?

Exactly like that. Expert McSpadden explained: "It helps to prevent the shift of the upper body when the plane has a strong tremor."

In fact, in small planes, shoulder protection is a mandatory requirement, according to flight safety regulations from December 1986. Along with waist straps, shoulder straps can reduce the risk of injury up to 88% and reduce the risk of death by 20% (according to the US Federal Aviation Administration).

If it is so amazing, why don't people still design shoulder straps on aircraft like in cars?

This is safer but somewhat inconvenient.

Because the cost is expensive and there is no design or installation plan that is both effective and convenient for large commercial flights. It will obviously inconvenience passengers during long flights.

Moreover, the safety index is at a high level, so it is not necessary to install a shoulder protection belt.

In 2017, there were no fatal accidents for commercial jets - making it the safest year for large commercial aircraft.

In general, all types of airplanes have a low death rate in 2017: the rate of 1 case per 12 million flights!

At such a rate, people do not want to install shoulder protection belts because the cost and effort are not large enough to compensate for complaints, certain objections will occur by the majority of passengers.

Anyhow, there was a protection belt on the hip. They are extremely useful, so if you want to protect yourself at the highest level, then you should "stick" to it throughout the flight.