Counter Technology

Methods used to avoid detection by cameras while continuing to break the law include:

• Braking before the camera.
• Units, such as laser detectors and radar detectors, which detect when the vehicle's speed is being monitored and warn the driver (these may be illegal in some areas).
• Units, such as laser jammers and radar jammers, which "jam" the laser and radar by absorbing them so they do not go back to the speeding cameras (these may be illegal in some areas).
• Units which use a Global Positioning System (GPS) and a database of known camera locations to warn the driver when a camera is nearby. This method relies on a good database of camera positions.
• Obscuring the vehicle licence plate. This is commonly illegal if the plate cannot be read by other people. Treatments which claim to obscure the plates from cameras but leave them visible to other drivers are often considered to be of dubious efficacy.
• Drivers obscuring their faces to avoid being identified. As summonses from certain cameras require drivers' faces in addition to vehicular licence plates, drivers whose faces are obscured, including motorcyclists wearing full-face helmets, have prevented certain summonses from being validly issued.

Safety device working by global positioning.

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This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Red-light_camera".