I posted this on the CT post but it really annoys me.
CT DOT is going to widen a clogged right hand exit ramp between two expressways. When they widen it from 1 to 2 lanes, they will make it a new left exit rather than a right. (I-91 NB to CT-15EB to I-84EB via Exit 29)
http://www.courant.com/news/connecticut/hc-charter-oak-bridge-0610-20150609-story.html
https://www.google.com/maps/place/Charter+Oak+Bridge/@41.7479721,-72.6585208,18z/data=!4m2!3m1!1s0x89e6539914493c83:0x64ba7a8ffef09d85
Actually it will probably be a split, two lanes to the left for CT-15/I-84EB and 3-lanes to the right for I-91. But that creates it's own issues and I-91 traffic will be cutting over to the right and vice-versa causing slow downs.
Also I heard that the feds won't fund a new left exit? Is that true?
I don't see any other state adding in a left exit in 2015. (PS they are taking out this same design in New Haven with I-91 and I-95 so why add it in up here?) :banghead:
Left exits are permissible when the directional traffic split is fairly even. Notably, the I-69/Pennyrile/WK interchange in Kentucky has a left ramp on the southbound route since more traffic is expected to keep going south than to continue on I-69 "south."
The bigger issue I can see though is that logically northbound drivers would expect to exit to the right to go east.
Quote from: Mergingtraffic on June 10, 2015, 06:34:09 PM
I don't see any other state adding in a left exit in 2015. (PS they are taking out this same design in New Haven with I-91 and I-95 so why add it in up here?) :banghead:
Isn't Kansas going to change the exit from WB/NB I-435 to K-10 to a left hand exit when they rebuild that interchange?
The ongoing work at the I-295/I-76/NJ-42 interchange has resulted in two new new left exits. Both of them are just single lane crossovers from I-295 onto 76/42 through a barrier that was put up where previously the two highways were joined together. I don't know how permanent they are, but the one from 295 Northbound onto 76 got a new number (Exit 27) despite Exit 26 (also a left exit) already leading to 76. Now that there are no more local and express lanes on 76 that's not really necessary.
Quote from: bzakharin on June 11, 2015, 02:29:01 PM
The ongoing work at the I-295/I-76/NJ-42 interchange has resulted in two new new left exits. Both of them are just single lane crossovers from I-295 onto 76/42 through a barrier that was put up where previously the two highways were joined together. I don't know how permanent they are, but the one from 295 Northbound onto 76 got a new number (Exit 27) despite Exit 26 (also a left exit) already leading to 76. Now that there are no more local and express lanes on 76 that's not really necessary.
Technically, both those left exits have always been there. The new Exit 27 is simply a feed from 295 N onto 76 W, whereas before it was an unnumbered weaving condition which still required 76 Westbound traffic to merge left from 295 North. (Even worse, the weave was actually numbered 1B for traffic from 42 North to 295 North.)
It's only a wild guess, but current Exit 26's days may be numbered once the new overpass alongside 295 North is open. In the final configuration this ramp will be 2 lanes wide plus shoulders for traffic going from 295 N to 76 W. It would make a lot of sense for this ramp to temporary hold 3 lanes of traffic with all of 76 Westbound traffic using Exit 27.
Having said that, it will reduce the long, 1/2 mile accel lane from 42 North to 295 North into a very short 1/10th of a mile accel lane.
Again, just a guess, but I'm going to think that Exit 26 may become the exit number for 295 to 42 South, and Exit 27 will take over for 295 to 76 West. And it would work for both directions, although if that held true 295 SB would feature a Exit 26-27 ramp, somewhat similar to the Exit 21-22 ramp on 295 North.
Quote from: jeffandnicole on June 11, 2015, 03:20:43 PM
Again, just a guess, but I'm going to think that Exit 26 may become the exit number for 295 to 42 South, and Exit 27 will take over for 295 to 76 West. And it would work for both directions, although if that held true 295 SB would feature a Exit 26-27 ramp, somewhat similar to the Exit 21-22 ramp on 295 North.
Are you saying the current Exit 26 southbound will also be closed? Or is the exit to 42 be moved to use the same ramp?
Eventually, current exit 26 southbound will be moved to the right, and will become 3 lanes wide. That ramp will then split, with 2 lanes to both 42 South and 76 West.
If you go thru that interchange, the hill they build alongside 295 South will be that ramp. They have a lot of work to do there in the meantime though!
Other guess here...that hill will eventually be a temporary roadway for all of 295 South traffic while they construct the permanent overpasses over 76/42 for the 295 thru movement.
Quote from: Revive 755 on June 10, 2015, 09:42:13 PM
Isn't Kansas going to change the exit from WB/NB I-435 to K-10 to a left hand exit when they rebuild that interchange?
http://jocogateway.com/the-project/improvement-map/
I don't think the map at the top of that page shows what is actually going to be built. Look at the engineering maps. They show that the exit from WB I-435 to WB K-10 will remain a right-hand exit.
During the Crosstown rebuild two new left exits off MN 62 were built (either direction to I-35W), while a left exit and left entrance off I-35W were removed.
The right exit from MN 65 north to I-94 west is planned to be replaced with a left exit.
Left exits are cited as one of the reasons Seattle's traffic is terrible, since it encourages left-lane camping.
The best way to fix them is to build a right-handed exit and convert the existing left-hand one into an HOV exit. This was done in Everett, WA with I-5's Broadway exit and it allows for commuter buses to quickly access the train station/bus hub.
Quote from: Mergingtraffic on June 10, 2015, 06:34:09 PM
Also I heard that the feds won't fund a new left exit? Is that true?
I think that is correct. Though there are some new left exits on the I-95 Express Lanes and I-495 Express Lanes in Virginia, but those are somewhat unusual cases.
Quote from: Mergingtraffic on June 10, 2015, 06:34:09 PM
I don't see any other state adding in a left exit in 2015. (PS they are taking out this same design in New Haven with I-91 and I-95 so why add it in up here?) :banghead:
I dislike left exits (and entrances) with a passion.
I actually wouldn't be shocked if NYSTA eventually wants to put in a left exit at the I-90/I-290 interchange. Per recent studies, directional split to/from the south (west) is about 80-20 in favor of I-290. One of the few cases where one would make sense. Also has the logic issue of the current left-side ramp immediately curving to the right and the right-side ramp curving to the left (west) just north of the interchange.
I know Ohio was putting them in until relatively recently (SR 8 at I-271, anybody?), but District 6 has been moving stuff to the right as of late. The South/East Innerbelt project in Columbus will eventually make I-70 the "through route", remove most left-hand exits, and leave only one left entrance (I-670 EB to I-71 SB). East side is mostly completed, with the I-71/I-670/Spring Street interchange having no left exits and left entrances at the aforementioned location and on I-670 east of the interchange.
I-75 northbound at Hopple Street in Cincinnati was a left, but has been converted to a right.
One mile south, the northbound exit to Harrison Avenue is still a left exit (and probably will remain so for some time, since it is not included in the current work from there to Paddock -- rather, it is considered to be part of the Brent Spence project).
https://www.google.ca/maps/@39.206672,-84.464737,3a,15y,26.76h,89.79t/data=!3m7!1e1!3m5!1sXIul_JAdOdLeK1CLVKCHzA!2e0!6s%2F%2Fgeo2.ggpht.com%2Fcbk%3Fpanoid%3DXIul_JAdOdLeK1CLVKCHzA%26output%3Dthumbnail%26cb_client%3Dmaps_sv.tactile.gps%26thumb%3D2%26w%3D100%26h%3D80%26yaw%3D112.97078%26pitch%3D0!7i13312!8i6656
I-75 at the Lockland Split. Makes for a strange but complete diamond interchange.
NC's non-interstate freeways are often riddled with strange left-exit setups, such as this interior SPUI on Wendover Avenue in Greensboro: Maps Link (https://www.google.ca/maps/@36.064745,-79.8480567,451m/data=!3m1!1e3)
Quote from: Bruce on June 13, 2015, 07:59:24 PM
Left exits are cited as one of the reasons Seattle's traffic is terrible, since it encourages left-lane camping.
The best way to fix them is to build a right-handed exit and convert the existing left-hand one into an HOV exit. This was done in Everett, WA with I-5's Broadway exit and it allows for commuter buses to quickly access the train station/bus hub.
I visited Seattle a few months ago, stayed at a hotel near the Southcenter Mall. Going to the convention center downtown, coming back specifically, was problematic. Going there, you had a left exit to get off, so I tended to stay left most of the trip (I was going fast though, cruising at 75 down the carpool lane when the traffic was light) because of that. Going back, you got onto I-5 southbound, and you had about a half a mile that you needed to merge over 3 lanes to the left, to avoid a bunch of exit only lanes including the I-90 interchange. Too many interchanges in a small window, lots of weaving, and the traffic in these right 3 lanes was really bad (even though the through lanes were moving fine, which made it harder to merge over).
This picture shows it better than words:
(https://www.aaroads.com/forum/proxy.php?request=http%3A%2F%2Fimgur.com%2Fv7F9b3ul.png&hash=995b3b91e045ffae33cd1e7f8e0ae631652ebdd8)
(https://www.google.com/maps/@47.613485,-122.330336,3a,75y,202.37h,89.37t/data=!3m6!1e1!3m4!1sN8dlRxQf14vuwL7GTxZQxw!2e0!7i13312!8i6656)
Coming off the the onramp I'm in the farthest right lane and need to continue on I-5 South. Not great...
We're going to rebuild the downtown segment sometime soon. It's starting to crumble a bit and it would be a great opportunity to replace the reversible express lanes with all-day HOV/transit lanes (with left-hand exits just for them) and put a lid on as much as we can.
I'll be looking forward to the 50 years of debates that will precede the groundbreaking ceremony and the additional 20 years needed as float time.
I dislike left exits and merges, but while FHWA is discouraging them (but not banning them), I do not believe they are out-and-out bad.
However, here is one that I hate with a passion. This (https://www.google.com/maps/place/Columbia,+MD/@39.1596623,-76.8290556,16z/data=!4m2!3m1!1s0x89b7dfb06369a051:0xf0d6bd65b687635d) interchange (Md. 32 and I-95, Exit 38 in Howard County) has (theoretical) high-speed left-hand exits and merges for movements from westbound 32 to southbound 95; and from eastbound 32 to northbound 95 (this one works especially badly during peak traffic times, with plenty of conflict with northbound I-95 left lane traffic).
Quote from: doorknob60 on June 22, 2015, 05:38:55 PM
This picture shows it better than words:
(https://www.aaroads.com/forum/proxy.php?request=http%3A%2F%2Fimgur.com%2Fv7F9b3ul.png&hash=995b3b91e045ffae33cd1e7f8e0ae631652ebdd8)
(https://www.google.com/maps/@47.613485,-122.330336,3a,75y,202.37h,89.37t/data=!3m6!1e1!3m4!1sN8dlRxQf14vuwL7GTxZQxw!2e0!7i13312!8i6656)
Coming off the the onramp I'm in the farthest right lane and need to continue on I-5 South. Not great...
Don't want to drag this too far off-topic... but I will point out that the I-90 exit is actually a C/D lane, so with some creative signage, that saves you one lane you don't have to move over. But yes, there are certain times of day where it's an absolutely horrible idea to try to get on at Yale. (I'm assuming this (https://goo.gl/maps/YQSMI) is the ramp in question?)
Quote from: Kacie Jane on June 23, 2015, 05:26:39 PM
Quote from: doorknob60 on June 22, 2015, 05:38:55 PM
This picture shows it better than words:
(https://www.aaroads.com/forum/proxy.php?request=http%3A%2F%2Fimgur.com%2Fv7F9b3ul.png&hash=995b3b91e045ffae33cd1e7f8e0ae631652ebdd8)
(https://www.google.com/maps/@47.613485,-122.330336,3a,75y,202.37h,89.37t/data=!3m6!1e1!3m4!1sN8dlRxQf14vuwL7GTxZQxw!2e0!7i13312!8i6656)
Coming off the the onramp I'm in the farthest right lane and need to continue on I-5 South. Not great...
Don't want to drag this too far off-topic... but I will point out that the I-90 exit is actually a C/D lane, so with some creative signage, that saves you one lane you don't have to move over. But yes, there are certain times of day where it's an absolutely horrible idea to try to get on at Yale. (I'm assuming this (https://goo.gl/maps/YQSMI) is the ramp in question?)
Yep that's the ramp I was getting on at. There was only one time where traffic was bad enough that it was a struggle to get over (free flowing the other few times), but it wasn't fun regardless.
SB US 63 is a left exit off WB US 60 at Willow Springs, MO