Air Bag And Seat Belt example essay topic

Nowadays, along with the development and increase of economical level, the automobile has become an essential and important transport. Also, it leads to another problem: traffic accident. Over the last century, there were more crashes in U. S than the number of the wars that Americans have been through. Therefore, people started to notice that they need the automobile safety to protect themselves. Over the last 100 years, the automobile safety has changed a lot to give out the best protection that we " re using today. Below are 3 major features: safety glass, air bag and seat belt.

Today safety glass, which will not splinter when exposed to shock, is in windshields for cars. Essential as it is, safety glass was the result of a clumsy mistake. In 1903, Edouard Benedictus, a French scientist inadvertently knocked a glass flask to the floor when fetching reagents. He heard the glass shatter, but later, he saw the broken pieces of the flask still hung together, more or less in their original contour. Then he learned that the flask had recently held a solution of cellulose nitrate, a liquid plastic, which had evaporated, apparently depositing a thin coating of plastic on the flask's interior.

He experimented with coating glass with liquid plastic, then shattering it and it was not broken. When Benedictus read that most of the drivers seriously injured had been cut by shattered glass windshields, he knew that his unique glass could save lives. Unfortunately, automakers were uninterested in the costly safety glass for windshields. It was not until the outbreak of World War I that safety glass found its first application: as the lenses for gas masks. After automobile executives examined the proven performance of the new glass under the extreme conditions of battle, safety glass's major application became car windshields.

It was very dangerous when something hit your car, the glass was broken and as a result, you would be sore and even dead. But with this unbreakable glass, now you don't have to worry about this because nothing can touch you from the outside. An air bag is a high-speed inflation device hidden in the hub of the steering wheel or in the dash on the passenger's side. Today they are installed on all new passenger cars sold in the United States. Some automobiles have side-impact air bags, located in doors or seats. The inflated bag creates a cushion between the occupant and the vehicle's interior.

They are made of a nylon or polyester fabric coated with neoprene. The deployment of air bags is controlled by crash sensors and an electronic control module. The crash sensors are designed to detect the sudden deceleration, or slowing down, of a vehicle caused by a crash. The first air bag was patented in 1953 by American engineer John W. He trick.

The federal government began making air bags mandatory in the 1990's. The force with which an air bag deploys has proven deadly to children or small adults in some circumstances, however. For this reason, children aged 12 and under, as well as rear-facing infant car seats, should not be allowed in the front seat of a vehicle equipped with an air bag on the passenger side. Some newer automobile models are equipped with switches to disable the passenger-side air bags when a child or infant is traveling in the passenger seat Automakers continue to research ways to make air-bag systems less dangerous for frail and small passengers, yet effective in collisions. A famous automobile safety feature that can not be ignored is seat belt. It was noticed because lap belt wasn't good, it caused spire injures.

Volvo had the first safety belts in 1849. The first U.S. patent for automobile seat beats was issued to Edward J. Claghorn of New York in 1885. Claghorn was granted United States Patent for a Safety-Belt for tourists. Swedish inventor, Nils Bohlin invented the three-point seat belt - not the first but the modern seatbelt - now a standard safety device in most cars. Nils Bohlin's lap-and-shoulder belt was introduced by Volvo in 1959.

Seat belt and upper-body restraints that relax to permit comfort but tighten automatically during an impact are now common. Some car models are equipped with shoulder-restraint belts that slide into position automatically when the car's doors close. Seat belt can prevent you from striking against the automobile's components when accident happens. After 100 years of development, the number of car accidents has decreased. The most important thing is the awareness of the people behind the wheel.

40% of the total accidents are due to human. If they were more careful, maybe we didn't have any car accidents. Therefore, it makes people think about using computer to drive automobile. Sometimes human makes mistakes when driving and it leads to lots of serious accidents.

On the other side, computer will never be exhausted. Perhaps in the future, computer driving car will become more popular. If people feel tired, they can turn on the computer and then sit back from that point on. With the installed program, computer can drive you home safely. However, it will take a long time for people to invent the perfect computer. The best things people can do to prevent traffic accident are being more careful and take full advantage of the safety automobile features.