Turning and U-turns
A turn is announced early and taken slowly. Signal in good time, check the mirror, move into position, and slow to a speed you could stop from.
Turning right in Nepal means crossing oncoming traffic, so it needs a gap you are certain of. Signal right, wait where you can see, and turn only when the road is genuinely clear - not when it is nearly clear.
Turning left is the simpler turn but has its own risk: cyclists and pedestrians on your inside. Check the nearside mirror before you commit.
A U-turn belongs where the road is wide, visibility is long and it is not prohibited. Where a sign forbids it, that sign is there because someone has already had a collision doing it.