On the through road near Dalfsen you are driving in the right lane of two lanes. A motorcyclist has been behind you for a while, keeps changing position between the lanes, and briefly disappears entirely from your view. What is the correct assessment?
The motorcyclist surely keeps to a fixed position, so you do not need to check extra before changing lanes
The motorcyclist can appear 'out of nowhere' right beside or behind you; check your mirrors extra often before changing lanes
Explanation
False — trap: fixed-path assumption. Some motorcyclists try to make use of 'every gap' they can find; because they are fast and agile, they can appear 'out of nowhere' behind you (Book p.132).