Rules about U-TURN slots

[dr. d]

Hi guys,

Is there a general traffic rule or law about inner lanes MUST take a U-TURN or does it have to have a sign that says INNERMOST LANE MUST TAKE U-TURN?

The street is a 3-laner.

Thanks

if it is not forbidden, it is allowed.
if it is not specifically ordered, it may not be performed.
what does the road signage say?

but there are rules on common sense. while one may not get a ticket for not following these common sense rules, one may still get a fender bender.