If you don't hear the siren, police are sure you'll feel the Rumbler
The Los Angeles Police department announced its intention to install the low-frequency Rumbler siren into 20 black-and-white vehicles before
The Los Angeles Police department announced its intention to install the low-frequency Rumbler siren into 20 black-and-white vehicles before a larger expansion. The Rumbler interacts with a standard police siren and amplifies that sound through its speakers.
Original reporting: LA Times, California.
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