All Types of Seat Belts and How They Work

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Seat belt use has been one of the largest cultural shifts within the World over the last several decades. Only 15% of individuals wore seat belts within the early 1980s. Those numbers have risen to almost 90% because of the introduction of primary safety belt laws. Safety divisions within the car industry have also continued to boost safety belt design over time for passenger comfort and protection. Here, we’ll discuss the six forms of seat belts and the way well each protects you during a crash.


  1. Lap Belts

The lap belt is the oldest and most elementary type of safety harness. it’s a two-point safety harness that straps the rider in, crossing at the hips.

While a lap belt can keep your body from being ejected from a vehicle, it doesn’t offer much protection during a crash. Without support across your torso, the highest half of your body is liberal to flop forward. This leaves your head and neck vulnerable and you’re very likely to be injured during impact.

Lap belts are much less common nowadays, but they’re sometimes still found within the middle rear seat. These days, manufacturers usually put a three-point belt therein position for better safety.


  1. Shoulder Belts

Also called a sash, the shoulder belt is another two-point safety harness. It restrains the rider across the torso, secured at the shoulder and hip.

This belt design intended to restrain the upper body and stop the kinds of injuries happening in crashes where the rider wore only a lap belt. It only worked well in conjunction with a lap belt, however. Without a lap belt, people often “submarined,” or slid underneath the belt in a very crash.

Because of this, it’s rare to search out these kinds of belts in cars any further. They’ve been replaced by the far superior three-point belt.


  1. Three-Point Belts

This belt stretches across your torso and your lap, securing you at three fixed points. It’s usually made of one long piece of nylon fabric that stretches over one shoulder to the alternative hip, so across the lap to the opposite hip.

This is the foremost common life belt in modern cars. It successfully combines the security features of the shoulder and lap belt, restraining the complete body. It also spreads the impact of a crash across your torso, reducing the likelihood of injury.


  1. Automatic Seat Belts

Automatic seat belts were fashionable some decades ago, but are less common now. These were intended to supply the identical protections as three-point belts, but with one more level of convenience.

For these, the shoulder and lap belts were separate. The passenger manually fastened the lap belt, while the shoulder belt automatically slid into place across their body once the car started. the automated belt had a buckle (usually where it attached over the shoulder), therefore the passenger could manually release it if needed.


  1. Belt-in-Seat (BIS)

The Belt-in-Seat could be a variation of the three-point life belt where the purpose secured above the shoulder is truly within the backrest of the seat rather than the frame of the car.

This design encompasses a lot of appeal in considering both passenger comfort and safety. The fit reduces chafing of the neck and shoulder, which could be a common complaint about shoulder belts and one of all the ill-advised reasons some people don’t wear seat belts. Researchers have also developed BIS sensors which will answer changes in seat angles to higher protect riders during rollovers.


  1. Five-Point Harness

The five-point harness secures the passenger over both shoulders, at both hips, and between the legs. The straps are buckled into a central position over the chest, which can spread the impact evenly just in case of a crash.

These are most typical in infant car seats. When properly adjusted, they’re one of all the safest types of safety belts out there.

Five-point harnesses were also common in competitive race cars, though six-point harnesses gained prevalence after the death of Dale Earnhardt during a race. (It was thought that his five-point harness may are off-center, contributing to his death.) The six-point harness has a further strap between the legs.

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