Quote:
Originally Posted by Mazrim
If I'm reading this correctly, you would prefer something like I quickly sketched up below on the right?
If you've driven Glenmore EB towards 14th Street, you know what happens in that configuration. People who aren't familiar with the area or not paying attention have less "outs", so to speak, when you have both lanes exiting like that. They end up darting across one or even two lanes at the last second to get to the proper lane. In the current configuration (on the left of the image), if you're in the 2nd right lane approaching the exit, you can screw up and not have to panic merge. The right lane still has to dart across, but it's less troublesome when it's only one lane.
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I drive through Glenmore and 14th about 5-10 times per week and Stoney Deerfoot about 1-5 times per week. Yes I would prefer the right hand drawing (nice sketch by the way) version to the current set up.
I see your reasoning WRT Glenmore however there are few major differences that favour having two lanes exit at Stoney Deerfoot.
(1) The major problem with Glenmore/14th is the weaving that is required as Glenmore people need to get RHLs to get to 14th while the Crowchild people need to get into LHLs to onto Glenmore. Stoney Deerfoot does not have the weave problem.
(2) On Stoney Deerfoot, the only way for someone to get into far RHL is from center RHL, so it doubtful that unware motorists would be doing the panic merge from far RHL to Center LHL.
(3) The major advantage to having two lanes each at the junction is that cars in the far LHL only have to double lane change rather than triple lane change to take the Deerfoot exit.
The problem I have with the current set up is the Far LHL is doing about 120km/h while the center RHL is doing about 90-100Km/h and the highspeed weave has caused me a few times to do a panic triple lane merge. I am also finding that with three lanes continuing through the interchange, most RHL drivers are not changing lanes into new RHL.
I have also gotten into a few situations where the RHL is travelling at 90Km/h and desiring to continue straight through to Stoney EB. They are trying to merge at the same time as faster traffic (doing 110km/h) is trying to get around them and into Deerfoot exit lanes. This might be a seasonality issues as the two times i have witnessed the situation were slow moving 5th wheel with green and white licence plates.