Police departments use dashcams in police vehicles to gather evidence during traffic stops and car chases. Some dash cam systems can be automatically activated when a police car’s emergency lights or siren are turned on. Freedom of information laws mean that the footage can be released under some circumstances, and this can be an important tool in reporting on police actions. TV shows like World’s Wildest Police Videos have frequently featured car chase videos shot from dashcams.
Read more: https://en.wikipedia.org/wiki/Dashcam
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