Only on the side of the road where the sign stands.
From the sign to the next junction with another road, unless something ends it sooner. An exit from, say, a car park or a property does not count as a junction.
Standing still in a queue or to avoid danger does not count as stopping.
Exam trap
Not even briefly to let someone out.
Do not mix up with
No parking: there you may stop for people to get in or out.
