IT+in+traffic+control+systems

=IT in traffic control systems=

=Road traffic=

Firstly, a model is used to design specific types of road networks, bridges (etc.) based on the volume of cars they have to deal with.

In road networks, traffic lights are used to control the traffic flow.
 * The colours of the traffic lights are universally accepted:**

**Amber** - means slow down (indication that the light will soon turn red) **Red** - means Stop!
 * Green **- means Go!



Most traffic lights are controlled by computers and designed to run in a system where each road is given equal amount of "Go!" time, at different times of course. When one shows Green, the others will turn Red to stop vehicles from crashing. But other traffic light networks run on a system where it gives more "Go!" time to a particular road at maybe a particular time of the day when that road is very busy, so to reduce traffic more time is given. Traffic lights also have special lights to indicate to pedestrians when they are allowed to cross the road (when the light for the cars are red). Some traffic lights are also embedded and able to show the time, so a countdown can be seen by drivers to know how long a colour of light will last.

**Traffic cameras** Traffic cameras are placed on roads, usually where there has been a lot of accidents due to driving at a high speed. These cameras are placed on traffic lights and sometimes on road sides to catch people 'in the act'. They use motion sensors to record the speed of the cars passing by and if the speed is above the speed limit on that particular road then they take a picture of the scene, with the driver, car and number plate usually in the picture. The picture is then sent to the appropriate officials and a fine is given to the guilty driver, through either mail, e-mail, text etc.


 * Title || Link || Summary || Contributed by: ||
 * Traffic Control System || media type="youtube" key="bXQbfrtCYFA" height="315" width="560" || How IT is used in road traffic control system || Mohammad Ezmir ||

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=Air traffic= There are air traffic towers in airports to manage the traffic of air planes in the sky. They use radars to detect the present location and situation of the plane. The pilot uses GPS for navigation and is constantly in communication with control towers, from where they came from and from where they're going.




 * Social/ethical issue: **[[image:contiitgs-2013/Air_traffic_control_room_2.jpg width="473" height="373" align="left"]]

**Reliability of traffic light:** Thunder storms can damage and cause traffic lights to malfunction


 * Reliability of air traffic controller: **

Humans who use the computers could lose focus or fall asleep which could lead to fatal accidents

If a plane has to emergency land in a Less Economically Developed Country that has no or very poor air traffic management or airport then the plane will have trouble landing.
 * Digital divide: **


 * Title || Link || Summary || Contributed by: ||
 * Making the skies safer, cleaner and cheaper to manage || BBCNEWS || Plans of improving the air traffic management system in Europe || Mohammad Ezmir ||