No U-Turn?

When you wanna make U-turn will you look for a U-turn signboard or No U-turn signboard? If doesnt have any one of it, does it mean you can or cant make a U-turn?

Last night i got stopped by a police nearby my house after i made a U-turn at a traffic light. He pulled me a side. After Najib become the PM they seems very hardworking. Dogs. Anyway, below was my conversation with the dog.

Me: (just kept quiet waiting for him to talk 1st)
Dog: Encik langgar lampu merah tadi lah. ( it was still green)
Me: Mana adeeeee, masih hijau tadi.
Dog: Encik buat illegal U-turn.

Most of the dogs will try to find something for give you compound.

Me: sini tak boleh buat u-turn ke?
Dog: mana boleh, takde sigboard kata boleh buat u-turn
Me: Habis, takde signboard kata tak boleh buat u-turn pun.
Dog: Nak pergi mane ni? Lesen, IC
Me: ( just give him the wat he want)
Dog: habis macam mane nak settle? nak compound ke macam mane?
Me: aku tak salah, takde signboard kata tak boleh u-turn pun. kalau nak, bagi compoud je lahh
Dog: *kept quiet for a moment*
Dog: ok lah..kali ni bagi warning, lain kali jgn buat lagi.
Me: *speed off*

So actually can i make a U-turn or not? If dont have signboard says you can u-turn means u cant make a u-turn? if dont have signboard says u can make a u-turn means you cant? WTFFFF

That's why i seldom or never make a u-turn at traffic light..only last night.