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Highway 401 Widening - Highway 8 to Townline Road
#41
You're supposed to use the entire lane, it's called a zipper merge and actually leads to traffic moving more efficiently.
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#42
Supposed to, but nobody knows how to do anything properly, so that results in a massive backlog of traffic that completely screws 8.
For daily ion construction updates, photos and general urban rail news, follow me on twitter! @Canardiain
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#43
(05-07-2016, 10:40 PM)panamaniac Wrote:
(05-07-2016, 10:31 PM)Canard Wrote: So this past week, the lane arrangement at the base of the flyover connecting Highway 8 East to 401 East was reconfigured. For the worse.

Previously, 2 lanes on the ramp connected to 3 lanes on 401 - briefly making a 5-lane arrangement, allowing traffic to merge, before the right two lanes ended sequentially dropping from 4, then to 3 lanes.

The new configuration ends the rightmost lane of the two on the ramp just before the merge point. On 401, the rightmost lane disappears just before the merge, so 401 goes down to two lanes. The single lane on the ramp becomes the third, rightmost lane on 401 continuing on.

The problem with this arrangement is that the effective lane capacity decreases before it increases, creating an absolutely massive bottleneck on 8 every morning.

The shift only moved the merge points 100 m or so West, but it's absolutely destroyed whatever efficiency was left at this interchange.

I'm trying to imagine this - does it happen anywhere else on the 401?  It seems to give reason to all those drivers who insist on sitting only in the centre lane of the 401.

There used to be similar arrangement on the 401 core WB in Mississauga at the 410, where the right lane (of 3 total lanes) ended and the 2 lanes of the collectors collapsed into the express, with the left collector lane becoming the new right hand lane, and the right lane of the collectors exited to Hurontario. Once the collectors were extended a few years ago to Hurontario, this was of course reconfigured, but it was like this for some time and created a significant bottleneck.
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#44
My sister called me at about 1500hrs today to see what the problem was on Hwy 8. She was heading to Markham and said it was "a mess".
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#45
Always is. It's bad during the weekdays, but far, far worse on the weekends when you get people who aren't used to driving it daily trying to figure it out.
For daily ion construction updates, photos and general urban rail news, follow me on twitter! @Canardiain
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#46
I noticed that congestion the other day when I was coming back to town... mid-afternoon it was backed up. I'm usually leaving around 5 or 6 if I am heading out of town so I didn't notice the lane reduction. I guess if I gotta head out of town during the day I'll be taking the back way over to Townline road instead, I can't stand sitting in traffic.
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#47
Or just exit onto King after going over the bridge, and then turn left back onto the highway at the left-turn on ramp just before Shantz Hill. Avoids all the problems.
For daily ion construction updates, photos and general urban rail news, follow me on twitter! @Canardiain
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#48
(05-08-2016, 03:28 PM)jamincan Wrote: You're supposed to use the entire lane, it's called a zipper merge and actually leads to traffic moving more efficiently.

But there is always that one guy (gal) who drives down the middle of both lanes because they don't think you should be passing on the right.... I've always been a believer that we paid for that asphalt, we should be using it.  There was a poll in the Record a few years back where about 50% of drivers think its OK to use the entire lane, and 50% think you should be merging way back and your a jerk for bypassing the stopped traffic....

Coke
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#49
A single file line moves twice as fast as a double-wide line with a single-point restriction at the end. It's just physically half as long, giving the impression it's more efficient.
For daily ion construction updates, photos and general urban rail news, follow me on twitter! @Canardiain
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#50
I'm not a traffic engineer, but the consensus seems to be that a zipper merge is more efficient during periods of congestion:

https://www.youtube.com/watch?v=I-Xe-uxIeXg
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