31 July 2025

The villain in your wingmirror, but I merge correctly

| By Hayley Nicholls
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Roadworks

When it comes to merging, how soon is too soon? Photo: James Coleman.

There are two kinds of people in the world: those who know how to merge, and those who don’t.

Everyone thinks they’re in the first category and feels unbridled rage towards the other.

Those who wait patiently in a long line of traffic, dutifully preparing for the upcoming merge, feel a hot flood of rage when along comes some joker in the left-hand lane, only to jump the queue and slip seamlessly in at the last possible moment.

Now, I will share which side of this dichotomy I fall into. With fair warning, I have a sneaking suspicion I’m in the minority on this one. It is a dark secret I have long carried with me, until now.

It is I – the person who passes banked up traffic and merges at the last possible moment – or, as I like to call it, where the merge is.

Now, hear me out, because – unsurprisingly – I think it is you who is wrong.

They call it a ‘zipper merge’ for a reason. You’re not zipping properly. What you’re creating is more of a Something About Mary situation – and you, my friend, are the object preventing an efficient zip.

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Recently, I felt the searing glares of the anti-merge brigade on the back of my neck as I made a choice that many consider unforgivable. I drove past a long line of cars queued up a kilometre before any actual construction began – before a single traffic cone or warning sign was in sight.

I can only surmise that this line consisted of drivers who made this commute daily, and therefore knew there was a merge on the (distant) horizon.

As did I.

But rather than join the end of what was clearly a premature lineup, I left-laned it past them in pursuit of – dare I say it – the actual merge point. I knew I was making a bold stance.

More specifically, I was making peace with being the target of disapproving glares and a quiet chorus of “I hate people who do that!”

I suspect this is where the perceived righteousness of this behaviour becomes nuanced: Was I already in the left lane, or did I intentionally veer into it to avoid the line?

I will not be disclosing this information, and I thank you for respecting my privacy at this time.

But therein lies the catalyst for the social outrage. While this manoeuvre is totally legal – perhaps even sensible – it remains socially loaded and triggers our sense of personal justice.

And that’s the thing – on the road, it’s never just a disagreement about the practicalities of road usage. It’s personal.

Something about being behind the wheel of a vehicle can transform otherwise calm and rational human beings into vengeful crusaders of moral superiority.

The smallest perceived error becomes an unforgivable character flaw. It’s never “That driver failed to indicate properly”, it’s simply “What a total &#%$”.

It’s not unlike the endless debate over whether it’s ‘okay’ to recline your seat on a plane. A fiery debate I will not weigh in on. One unforgivable faux pas at a time, please.

READ ALSO Looming wet weather pushes back light rail work, road closures

These are polarising issues. But – and don’t come for me too hard – whilst I appreciate plane seat etiquette has many grey areas and variables, merging doesn’t! There’s a correct way and an incorrect way to do it. However, it feels as though when it comes to merging, being ‘right’ does not equate with being ‘good’.

The late merge – also known as the ‘zipper merge’ or ‘just the proper way to do it’ – is not simply a self-serving manoeuvre. It’s not ‘cutting in’. It’s an efficient, evidence-based traffic solution.

It keeps traffic flowing, reduces congestion, and actually makes things fairer – if, and only if, everyone does it.

But when overly prepared drivers act too far in advance, they develop a wholly unnecessary queue. And so we sit, static but socially superior, an entire postcode away from this minor traffic interruption, and anyone who charges ahead in pursuit of the zipper merge is cast as the villain.

But if you think about it, they’re doing it for all of us.

Not all heroes wear capes – some just indicate and merge effectively.

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Okay, I gotta’ admit I don’t understand this article. I think I need to see a visual to get the idea. All I can say is, if I’m merging and the car in the next lane is ahead of me, I give way to that car and merge behind it.

In Australia we refer to viewing mirrors on the side of our cars as “side mirrors” not “wingmirrors”!

If you are going to have a go at drivers and our city’s driving rules get it right!

I thought the term “Wingmirrors” was a bit odd and took me a little while to realize what it meant.

A straight forward “form one lane” where both lanes no longer have a line separating the traffic is the situation where the “zipper” works. The road rules don’t actually refer to a zipper though, they just say the car in front goes first. Page 30 of the 2019 ACT Road Rules has a picture to describe this. On the same page you can see that a “zipper” type merge doesn’t apply where the line separating the lanes is in place. In that situation if you are planning to cross that line, you are actually changing lanes, and you are required to not only indicate your intention but to give way to all traffic in the lane you are crossing into. Just because your lane is ending doesn’t give you the right to expect a “zipper” type merge. Page 30, again, has a picture to describe the difference. Since there is nothing to say where the writer was “merging” none of us can be sure that it is being done legally.

You’re correct but back in 2000 I had a driving instructor yell at me for doing exactly that. I tried to tell hem but he wouldn’t listen. I remember going home to look into the road rules and sure enough, I was correct. I never booked a driving lesson with him again.

The article might be tongue in cheek – otherwise it’s using legalistic logic (“correct merge”) to excuse selfish actions. The traffic does not move faster or more smoothly because you’ve sped down to the merge point. It moves only as fast as the choke point allows one-car-at-a-time. By merging just before the choke point you feel things are going quickly but for everyone else it’s going just a bit slower as they wait for the queue jumpers to get through. Zipper merging doesn’t make traffic move faster through the choke point – it DOES make merging and cooperation easier and fairer for everyone.

You are omitting a traffic characteristic, Alrob. A long single queue travelling below typical speed becomes subject to waves of faster and slower movement. The net effect of those waves is to reduce total speed of the flow. Minimising queue length, achieved with zipper merge, reduces wave generation so keeps all traffic flow through the choke point closer to optimum. Waves and stalls are then generated by failure to zip, blocking out.

For the legalities, this is not normal traffic lane changing but a compelled merge regardless of ordinary road or sign markings.

I find most people are considerate when letting people merge in Canberra, especially with the amount of roadworks which are occurring throughout our city at the moment. Turning from Kings Ave onto Parkes Way and Parkes Way onto Commonwealth Ave are good examples. There are numerous times I have driven through the roundabout on Fairbairn and Northcott Ave which merges into a single lane on the other side and always, without fail, there is someone who drives down right-hand lane and tries to cut me off. It is these smart Alec and inconsiderate drivers like the author who cause driver rage because, as they claim, it is legal and they can!

It’s like 2 lane roundabouts where becoming from one lane and merge into one lane after. People line up in the left hand lane to go straight and every now and then, someone gets upset that I use the right lane and pass a line of vehicles lining up like sheep to use the roundabout as is intended, ie to keep traffic flowing!

Article and comments don’t seem to distinguish between two scenarios. First is when the dividing line between the lanes stops. This is the true zipper situation where neither lane is the ‘through’ lane. Whoever is ahead goes first, with the driver in the adjoining lane falling in behind.
Second is when the lanes dividing line continues. To ‘merge’ into the through lane is actually a lane change which needs a suitable safe traffic gap in the lane to be joined. Hence the so called premature move into the through lane.

That’s Ok if people really are acting like a zipper, but that’s not what happens in reality. In situations where we are not talking about roadworks or banked up traffic – just two lanes merging – there is always an self entitled fool who thinks they can push ahead of a car (or even two) instead of allowing cars from each lane to alternatively merge. It seems the bigger the car is, the more they assume they have a greater right to the road. (The two lanes merging on Northbourne Avenue, going northwards just past the Dickson interchange, often becomes a nightmare for smaller cars, when there is no logical reason for it to happen.)

In cases of road works, people still don’t know what to do. The mess on Northbourne Avenue, near the tram works, is a prime example. When I see the lanes merging, I always hold back slightly to allow people to come across; but normally they ignore me, push on, wait until the absolute last moment and then get frustrated when drivers don’t let them in. I have some sympathy for interstate drivers who don’t know the roadworks are there, but my tolerance for local drivers, who do the same thing everyday, is wearing thin.

So you say it’s legal but that’s NOT what the ACT Road Rules say…

In Germany nobody merges early, they all use the maximum road surface of both lanes and then merge precisely at the merge point with no arguments or tension….it’s not even a discussion point and works by design. The British will voluntarily merge about a km before the merge point, then try and block anybody going past them in the right hand lane, it’s a weird contradiction of excessive politeness followed by sometimes extreme aggression to any non-conformists. Australia seems somewhere in the middle and Canberra is the twilight zone for maturity now that traffic is increasing…we let heavy trucks on the roads during peak traffic times, drivers will indicate and change lanes because they have a manoeuvre coming up in 5km and need to be ready, so darn the people stuck trundling behind them. It will only change when drivers start to equate loss of time to loss of earnings.

I have the idea that early merging is becoming a bigger problem. When i moved to the act in 2018 most people were merging properly at the merge point the author described.
I’m not sure what happened to drivers in the meantime and whether it correlates with people who feel the need to stop 1 or 2 car lengths early of the stripe for a red light, which also is a post covid habit

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