[aneutron]

Funnily enough, I got into trouble in Korea (Jeju to be specific) because of this. I had just stopped at a red light (huge intersection), and I saw a police car get behind me, they had their lights on and put on the sirens.

In my home country (France), lights mean emergency, sound means "MOVE ITS URGENT" (and they generally ONLY use sirens when it is REALLY urgent). So when they started the siren, I put my warning lights on and moved slowly through the red light and to the outside of the road (I did not continue moving).

The guy ripped me a new one in Korean, but then I explained that I thought it was urgent because we were all stopped and they put the sound on so I moved out of the way in the safest way I could and even stopped. He calmed down eventually.

Apparently, it's normal in Korea for police cars to 1) always have the lights on and 2) just randomly blast the sirens going about their day.