Outside Gramsbergen you are driving behind a tractor with a high-loaded trailer. The tractor switches on its right indicator and a short gap opens in the oncoming lane. What do you do?
You overtake: his right indicator means he is making room for you
You overtake as soon as that short gap in oncoming traffic is there
You stay behind until there is plenty of free space to overtake safely
Explanation
False — you overtake at a short gap. Behind a tractor with a high-loaded trailer the driver cannot see you; wait patiently until there is free space to overtake (Book p.131).