In Russia, DPS is the road patrol service of the traffic police, and its distinctive two-tone siren became widely recognised from patrol cars on city streets. Online, Russian users nicknamed the sound krakalka and shared short recordings on soundboards, where it was picked up for memes, prank clips and short videos. Its appeal comes from instant recognition: listeners hear authority, urgency and a slightly comic tone at once, so creators still use it to puncture a scene, fake an interruption or turn an everyday mistake into a mock police encounter.