Section 8(3)(b) in The Motor Vehicles (Driving) Regulations, 2017
(b)the driver shall not take a `U' turn if there are any blind spots around the vehicle and shall start taking a `U' turn only if it is safe to take a `U' turn, after closely observing the traffic in the opposite direction and observing the traffic on the sides and behind the vehicle in the side view mirrors and rear view mirror;