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How To Merge: Zipper Merge Is Best Way To Cut Down On Bottleneck Traffic, Says AMA

Fight the urge to merge!

We've all been there — sitting patiently in traffic when a car flies by on the right, passing dozens of other vehicles, and cuts in at the last second.

"What an a**hole," you think.

Turns out you — yes, YOU, mannerly citizen — are likely the a-hole who's at fault for the terrible traffic — not the opportunistic "cheater" you just cussed out.

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A new report from the Alberta Motor Association (AMA) says people who race up the merge lane and cut in quickly are the better drivers. What's more, they actually help move traffic along faster than "courteous" drivers who make an effort to merge early.

The zipper merge, as it's known, is most effective when drivers make the most of all available lanes as long as they're open, including those contentious situations where upcoming construction has closed the road ahead.

"If we maximize that full use of two lanes until the point of merge, and then we're courteous as drivers to allow alternating vehicles through, that can really help reduce some of that congestion," AMA spokesman Jeff Kasbrick told CBC News.

(Watch a delightful video from the Minnesota Department of Transportation instructing proper zipper merge etiquette:

In 2015, The Huffington Post Canada asked Alberta motorists about the most annoying habits in their fellow drivers. Interestingly, some complained about drivers who "rush all the way up to the end of the lane to try and get the furthest position, and then either cut into traffic or cause a jam up in the merge."

Well, the AMA says that kind of driving can reduce congestion by as much as 40 per cent — but everyone has to follow the zipper merge, and make room for those taking advantage of the closing lane.

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However, there are exceptions to the merge-at-the-last-minute method.

“When traffic isn’t backed up and an early merge makes sense, drivers should do so,” Kasbrick told 1130 News. “But in times of heavy congestion, using both lanes — followed by an orderly zipper merge — improves safety and efficiency.”

This week, the Canadian Automobile Association (CAA) released a study that found the single biggest contributor to delays on Canadian roads is the bottleneck traffic that forms when a road narrows. In fact, that is more of a factor than weather, collisions and construction.

The CAA estimated the country's worst bottlenecks result in 11.5 million hours worth of delays, and drain about 22 million litres of fuel per year.

Also on HuffPost

Worst Habits Of Alberta Drivers
(01 of15)
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"Merging at a yield and yielding at a merge!"- Jody McKay (credit:Jacek_Sopotnicki)
(02 of15)
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"YOU and anyone else plugging the left lane, are NOT the police, and have no right to keep people from passing you just because you are going the speed limit. In fact, you would be impeding the flow of traffic, which I believe is a ticketable offence."- Mike Bjerstedt (credit:Crocodile Images via Getty Images)
(03 of15)
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"No one stops at stop signs."- Gloria Filteau Zerr (credit:Kevin Law via Getty Images)
(04 of15)
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"Tailgating"- Kelly Rocco (credit:Giovanni Carlone via Getty Images)
(05 of15)
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"Not keeping a consistent speed."- Adam Yuill (credit:Hemera Technologies via Getty Images)
(06 of15)
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"The parking. Everyone parks on the lines and takes up 2 spaces. Haven't seen such horrible parking in my life."- Phil McHugh (credit:Robbo-Man/Flickr)
(07 of15)
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"Not signalling."- Patty Phillips (credit:RiveraNotario/Flickr)
(08 of15)
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"Texting and driving."- Nicky Shepherd (credit:Geber86 via Getty Images)
(09 of15)
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"Making a left turn from a right hand lane and crossing two, three or four lanes of traffic while they do so."- Thomas Glover (credit:pdxcommuter/Flickr)
(10 of15)
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"Driving at night, no headlights on."- Steve Banack (credit:Rasica via Getty Images)
(11 of15)
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"Speeding through school & playground zones!"- Jenna Bennett (credit:Elizabeth Cardoso via Getty Images)
(12 of15)
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"Driving too close to cyclists,"- Kiera Running-Gosse (credit:Hal Bergman Photography via Getty Images)
(13 of15)
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"Passing on double solid lines. Or trying to sneak into the long line of traffic behind a wide load."- Colette Gascon-Zahar (credit:Design Pics via Getty Images)
(14 of15)
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"People who can't judge traffic or lights properly and end up in the middle of the intersection blocking traffic."- Steven Thomson (credit:-Tripp-/Flickr)
(15 of15)
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"Drivers who speed up when you try and pass."- Maryanne Hayward (credit:fotog via Getty Images)

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