The model
The other way around: the merger yields to the exiter (Book p.153) — because mergers drive more slowly and have more overview. Zip merging follows its own rhythm: at 300 metres before the narrowing you adjust your speed, and only at 50 metres do you actually merge, without braking, one driver at a time (Book p.154-155).
Read this section on its own page: The model: Weaving and zip merging: who yields to whom, and the 300/50-metre rule
Core
Legally, mergers and exiters must give way to each other — it is a mutual rule on paper (Book p.153). But because mergers coming off the merge lane still drive more slowly than through traffic, and also have more room and overview to wait, in practice it is safer — and therefore self-evident — that MERGERS yield to EXITERS, not the other way around. Zip merging happens at a narrowing from two lanes to one, and follows a fixed rhythm with two distances (Book p.155): at about 300 metres before the narrowing you already adjust your speed to the traffic on the adjacent, through lane. Only at about 50 metres before the narrowing do you actually merge, without braking and without disrupting traffic — you slide into a space that is already there, you do not force your way through. There is also an agreement about the order (Book p.154): every driver on the through lane lets exactly ONE driver from the obstructed lane go first each time — not two or more in a row. That is what 'zip merging' literally means: the teeth of a zip also close one at a time. One final nuance the book itself names (Book p.155): you should indeed drive far along the lane that is ending — merging early is not a virtue here — but driving too far and only then claiming merge space at the last moment is irritating for other road users. Use the whole lane, but do not overdo it.
Read this section on its own page: Core: Weaving and zip merging: who yields to whom, and the 300/50-metre rule
Why it matters
Near Grijpskerke, where the provincial road narrows right before a bridge, a jam forms exactly there when everyone merges too early: the ending lane is left needlessly empty while the through lane clogs up. And whoever reverses the weaving direction — making exiters wait instead of mergers — forces a slower driver into an abrupt manoeuvre at exactly the point where overview is already smallest.
Read this section on its own page: Why it matters: Weaving and zip merging: who yields to whom, and the 300/50-metre rule
Test yourself
Near Nieuwvliet you are driving on the through lane of the N33, while at the same time an exiting driver wants to take the off-ramp and a merging driver wants to join from the on-ramp. In practice, who yields to whom?
Show the answer
The other way around: the merger yields to the exiter (Book p.153) — because mergers drive more slowly and have more overview. Zip merging follows its own rhythm: at 300 metres before the narrowing you adjust your speed, and only at 50 metres do you actually merge, without braking, one driver at a time (Book p.154-155).
Frequently asked questions
‘When weaving, exiting drivers should let merging drivers go first, because exiters are leaving the motorway anyway’ – is that true?
No. Because mergers drive more slowly and have more room and overview, it is actually the reverse: mergers let the exiters go first
‘When zip merging, it is best to merge as early as possible, as soon as you see your lane is ending’ – is that true?
No. Use all available room up to the narrowing: adjust speed at 300 m, only actually merge at about 50 m
‘When zip merging, several drivers from the obstructed lane may merge one after another before through traffic gets its turn again’ – is that true?
No. The agreement is that every driver on the through lane lets exactly ONE driver from the obstructed lane go first each time — not two or more in a row
‘When zip merging, you only need to adjust your speed right at the narrowing itself; you can just keep driving as you were for the 300 metres before it’ – is that true?
No. Already at about 300 metres before the narrowing you adjust your speed to the adjacent traffic; only at about 50 metres do you actually merge
‘When zip merging, you may drive as far as possible on the ending lane and only claim space at the very last moment, with nothing wrong with that’ – is that true?
No. You should indeed drive far along the ending lane, but driving too far and then claiming merge space is irritating for other road users