The global positioning system is an effective equipment for navigational purposes. Signals are received from a network of satellites which are orbiting the earth. The user of GPS will be able to receive the signals in 2 or 3 seconds after it is remitted. The system is well known for its precision and accuracy too. It is a marvelous achievement of the technology that GPS could be incorporated in the mobile phones. This is an example to show that benefits of a scientific invention can reach the users only if the concept is delivered to them through a suitable vehicle.

As a portable and compact device, the mobile phone has attained the status of an unavoidable facility in the modern life. The multipurpose instrument is now used for navigation in civil, defence and commercial segments of the society. Speed camera detection is yet another task that can be carried out by the composite device. Multifarious functions of the GPS mobile phones offer the users unprecedented advantages in a busy lifestyle.

Speed camera detectors incorporated in GPS mobile phones receive the database from the satellites and communicate with the user by serving appropriate alerts. Interacting with a few orbiting satellites, the speed warning device alerts the user about the existence of camera or any other relevant factor, which is important to the user to pursue the journey. The user will be served with information like the exact location, road speed limits and position of the speed camera. The data base is updated periodically as the speed limits vary from place to place. Locations of important landmarks like schools, gas stations, hospitals, etc too will be furnished to the user. It is important that the speed should not exceed the permissible limits. Equally important is that the speed should not be lower than the stipulated minimum in the highways. Driver will get alerts, whenever there are deviations or violations as far as speed limits are concerned. The existence of speed camera will be indicated to the driver so that it is easy to exercise caution.

The latest GPS speed camera detecting system adopts GSM-GPRS technology to enable itself to update data intermittently. Alerts or warnings can be given to the user either through visual display or by audio system. The user can set speed limits of a given choice and receive alerts when there is deviation from the set speed limits.

Use of speed camera detecting and warning system through the GPS mobile phone is not illegal. By monitoring the camera positions the user will be obliged to regulate the speed and avoid hazards.

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