The afternoon of April 28th this year, America California touring car rollover accidents occurred, killing at least 4 French tourists killed, dozens of people were injured, many seriously. One should have to travel, because of a serious car accident, instant death time evolved into human tragedy.

At the beginning of this year, when the Chinese lunar calendar lunar January fifth, a Shanghai tour group also took place in the malignant traffic accidents America near the Grand Canyon in Arizona, car accident caused 7 deaths and 10 injuries. multinational car accidents not only caused the attention of the world, but also caused people to safety.

　　
Traffic accident hidden danger
　　
According to the statistics WHO released, around the world each year due to traffic accident average caused 1200000 deaths, the total economic losses caused by up to $500000000000 per year. Has become a major hazard to human health and the development of the traffic accident death. Main causes of traffic accidents is drunk driving, speeding, fatigue driving and bad traffic environment.

Headquartered in Geneva, "global health research forum" also issued a warning, the next 20 years, road traffic accidents will become the world's third biggest killer. According to the forum, died in road traffic accident people, 2/3 is a pedestrian, but accidents happen in developing countries. Because the road traffic fatalities may not look like a plane and train accident so sensational, so did not cause enough attention of governments.

The Ministry of public security of China's statistical data display, over the past 10 years, China deaths in traffic accidents has been on top of the world, more than 100000 deaths per year, average every day at least 300 people were killed in a car accident, far more than the amount of car ownership of much higher American. According to the World Bank forecast, to 2020, China caused by road traffic accident death toll will rise 92%.

More serious is, China has entered the automobile society, driver awareness of traffic and traffic ethics has not been established, some drivers tend to even the most basic "red light stop, green line" disdain compliance; road basically follow the "who car, who first" "jungle principle", the pedestrian position in the last row; in the streets, the danger is not by reducing the speed but by honk the horn to ease.

　　
To reduce the accident of road facilities
　　
To reduce the traffic accident, in addition to the safety awareness of drivers and pedestrians, to develop some new techniques for ensuring the driving safety is also very necessary.
The high mortality of traffic accidents to road safety facilities are facing urgent demand to upgrade.

If the new energy absorbing bumpers replaced China's highway anti-collision sand buckets, traditional concrete pier, can minimize the occupants of collision accidents mortality. New bumpers compact and lightweight, installed in the highway isolation belt, when hit by a vehicle frontal impact, protective grille can absorb impact energy; when the side impacts, barrier system will correct the direction of travel of the vehicle. If this new bumpers comprehensive equipment to the domestic highway, can save about 20000 people in the next 10 years of life.


　　
Security technology on automobile
　　
Installation of intelligent electronic devices in the automobile can also reduce the risk drivers.
University of Oxford experimental psychologist Dr Spence said, scientists are studying how to use the sense of smell and touch sensory function, develop the driving vehicle performance more secure.

Doze off and by accident and road traffic accident's cause. Vibration type seat, safety belt or the pedal in a subtle way to the attention not centralized driver warning. Although the car is not a vibration prompt function, but experts predict, to 2020, all new cars will be the vibration that is fitted as standard.

In order to prevent speeding driver crashes, USA researchers developed can prevent car speeding GPS. The experiment consists of American company responsible for the implementation, earlier in the 100 car GPS installed equipment. This is no ordinary navigator, it has more complex structure. When a vehicle exceeding the speed limit, the navigator will alert the driver, even cut through the oil way to force the vehicle deceleration.

In order to reduce the traffic accident caused by fatigue driving, a fatigue early warning system of Chinese researchers have developed may become the driver's "assistant". Fatigue early warning system is developed based on the lie detector used skin electric information analysis and research, through monitoring the change of driver electrical transcutaneous electrical information curve, then assisted voice analysis of two-dimensional information, determine whether the drivers into the state of fatigue, and preventing the division doze.

Nissan Motor Company developed a new "pop-up hood", used to occur in the car and pedestrian accident, by buffering to reduce pedestrian and other parts of the head impact. The characteristics of this new technology is, installed between the front sensor detection in the bumper to the vehicle and pedestrian collision, internal control system will make the moment whether to start the engine cover judgment. If you need to start, the engine cover near the front windshield part will rise 9 centimeters, thereby alleviating the engine parts hard to pedestrian impact.

Japan automobile traffic department is pursuing a "alcohol lock", is expected to eliminate drunk driving. The driver before starting the engine, to a small alcohol car detection device blowing. Alcohol detecting device will soon get the alcohol concentration in the driver. If the alcohol concentration exceeded the standard value, the engine will not start.
　　

Intelligent traffic signal
　　
"The red light stop, green line" is the basic rule of transportation be known to all, but some people ignore what the red light, straight forward, greatly increasing the probability of the accident.

Implementation of traffic signal system can effectively reduce the traffic accidents caused by red light. For example, the British Transport Department invented a kind of intelligent traffic lights, the intelligent traffic light to detect speeding vehicles will run a red light, and delay across the street lights to turn green time. It can also calculate the number of vehicles on the way out, automatic adjustment of signal conversion time, to reduce traffic congestion. The traffic lights turn lights will also display the time, convenient driver.

South Korean researchers Li Hanyang not to design a traffic virtual wall, the relevant departments in the hope that the virtual wall instead of the original red light, reduce people for running a red light caused by the accident.

The traffic is generated by the virtual walls on both sides of the road metal vertical plasma laser rod. Laser initiated when crossing closed to traffic, drivers and pedestrians, the eyes will appear from the red laser a striking traffic virtual wall, reminds the people not to "hit the wall". When can pass, laser off, people will be able to smoothly through.

Although this traffic virtual wall as real wall thick, but still give drivers and pedestrians a hint, let people pay more attention to the traffic signs, thereby reducing the probability of traffic accident.

In order to increase the warning effect on motor vehicles, but also traffic virtual wall play pedestrians by "shadow". Although this kind of virtual wall and can't really stop the offending driver, but see a figure and so strong laser signal, at least make the offending driver some concerns.

In order to further warned of possible violations of the driver or pedestrian, traffic virtual wall can also connect with the alarm. When someone through the virtual wall, part of the laser beam is blocked, the alarm will start alarm function.

In fact, the development of intelligent transportation system can solve the traffic accident fundamentally, reduce the impact of traffic accident on social, environmental, safety, economic and other aspects of cause, and reduce vehicle energy consumption, to achieve sustainable development of road transportation.

For the traditional transportation system transformation of information technology, computer technology, control technology, the intelligent transportation system, and enhance the operational efficiency of the system, improve the reliability and safety of the system, reduce the energy consumption and pollution of the environment.