Diverging Diamond Interchanges (DDI)

[ExtraSlow]

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i thought the whole interchange was supposed to implode within weeks...

DDI is great. I hope we build many more.

[pheoxs]

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i thought the whole interchange was supposed to implode within weeks...

ZenOps hates it so it might be a good intersection. Hopefully they build more.

[suntan]

He was annoying on saved by the bell, good to see he got work as an interchange.

[ExtraSlow]

I compare every interchange to the 16th ave and deerfoot one, and so far, there's not a single one in Calgary that's worse. This DDI has the added bonus of pissing of old folks, which I find amusing, so that improves it's ranking in my mind.

[suntan]

I feel like I mentioned it before but that intersection (16th) had an accident the first day it opened.

[Sentry]

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I compare every interchange to the 16th ave and deerfoot one, and so far, there's not a single one in Calgary that's worse. This DDI has the added bonus of pissing of old folks, which I find amusing, so that improves it's ranking in my mind.

I have to stop at 3 reds every day coming home, going from NB Deerfoot to WB 16ave. But at least I get to drive past the daily northbound traffic jam.

[sexualbanana]

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He was annoying on saved by the bell, good to see he got work as an interchange.

Wrong one. This is the one from WCW who went on to start his own yoga brand.

[98brg2d]

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There seems to be some emerging issues as time moves forward.

It can be confusing for those expecting a European roundabout instead of a DDI when incoming on a not divided road. People will tend to accidentally enter the incoming right turn lane while attempting to turn left. In a normal traffic congested scenario, this never is a problem because there is always enough incoming head on traffic for you to know you know not to cross the double solid, but because of covid and sometimes completely empty intersections, people get confused.

The solution is to make sure the road is divided long before the intersection.

I drive this DDI multiple times a week in multiple directions and have never seen this happen.

What I have seen happen numerous times though are people stopping at the island between the sets of lights when they enter late and think they shouldn't keep going. They end up stopping directly below the second set of lights and then cannot tell when the light changes again. It really isn't a big deal since there is plenty of room for one car to stop there and there are good lines of sight to the incoming traffic. When it's a problem is if multiple cars in the same lane stop in the island, then there isn't enough room for two or more cars in all the lanes. I have seen multiple cars get stopped in the island and it can create gridlock, especially if they stop in the far right lane. I think it is the two sets of lights for one lane crossing/maneuver that confuses people.

[mr2mike]

Surprise! All these intersections are experimental means to slow traffic and keep you 50km/h or less.

Nothing was better than the old clover leaf setups. Just needed to build them bigger as the city grew.
Increase speed limits too. This would either intimidate nervous drivers or injure them and they give second thought to the bus pass idea.

[jutes]

The amount of dumbasses out there that slow down in merge lanes onto 100km/h+ roadways has grown exponentially in the past 3-5 years. It's way too easy to get a license these days so we just make things slower and cater to the idiot drivers.

Almost rear ended a GV80 because the old bat STOPPED in the right lane of an added lane intersection.

[jwslam]

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Increase speed limits too. This would either intimidate nervous drivers or injure them and they give second thought to the bus pass idea.

Nothing intimidates nervous drivers. There's zero fucks given by the champagne coloured RX350 going 65kph down deerfoot all the way from Beddington Trail to Southland Drive.

[Maxt]

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I compare every interchange to the 16th ave and deerfoot one, and so far, there's not a single one in Calgary that's worse. This DDI has the added bonus of pissing of old folks, which I find amusing, so that improves it's ranking in my mind.

The mini version of it a Glenmore Trail/Barlow Trail SE. All that money to get rid of the ogden road lights and jump the railway tracks and they build that clusterfuck of an intersection as part of it.

[ExtraSlow]

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The mini version of it a Glenmore Trail/Barlow Trail SE. All that money to get rid of the ogden road lights and jump the railway tracks and they build that clusterfuck of an intersection as part of it.

At least it uses a lot of land!

[ZenOps]

Reasoning seems to be that older drivers are used to polar coordinates, NSEW with more or less locked arms. And then only using gradual movement for turn.

As soon as you add a snake, they don't know what to do.

[Sentry]

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The mini version of it a Glenmore Trail/Barlow Trail SE. All that money to get rid of the ogden road lights and jump the railway tracks and they build that clusterfuck of an intersection as part of it.

The biggest atrocity was killing the DQ there that had 69c burger and 99c cheeseburgers. I would load up on those on the way to race city.

[Sentry]

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I have to stop at 3 reds every day coming home, going from NB Deerfoot to WB 16ave. But at least I get to drive past the daily northbound traffic jam.

This interchange also has the added excitement of this happening once in a while

[Brent.ff]

https://globalnews.ca/news/9769166/c...crash-decline/

Guess it works

[ExtraSlow]

It's a good design. Removes most high consequence collisions.

[gmc72]

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https://globalnews.ca/news/9769166/c...crash-decline/

Guess it works

I drive this everyday, sometimes twice a day. I like it.

[nismodrifter]

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https://globalnews.ca/news/9769166/c...crash-decline/

Guess it works

Thats good. Saw many high speed MVA's at 162 and Macleod over the years.