We should give heavy vehicles clear passage even when they have to give way according to the traffic rules.

Defensive driving and giving way to larger, heavier vehicles, is essential to achieve a more efficient traffic handling.

Larger vehicles need more time to accelerate, and it may improve the flow of traffic to give them clear passage to avoid them slowing down so often. Similarly, traffic handling will often also be improved by moving to the side or holding back so that buses and trucks have enough room to manoeuvre.