Thinking about the I-90/I-84 exit where I think more traffic exits. My apologies if this has been done before.
Excluding the many situations that are trivial because the highway ends and all traffic must exit.
Also excluding the many situations where this occurs because the route exits itself (such as I-94 EB at I-80/294/IL 394)
I don't have hard data, but I would guess these would qualify:
I-65 NB at I-80/94
I-64 both directions at I-65/71
IN 912 SB at I-80/94
IN 49 SB at US 30/IN 2
Quote from: cabiness42 on April 10, 2021, 05:36:07 PM
I don't have hard data, but I would guess these would qualify:
I-65 NB at I-80/94
I-64 both directions at I-65/71
IN 912 SB at I-80/94
IN 49 SB at US 30/IN 2
Well, here's one bit of hard data:
(https://i.imgur.com/7AX57gw.png)
That's about 3/4 of the traffic leaving I-65 in one direction or the other, which honestly, seems a bit lower than I would have thought. Some of the remaining traffic is headed for I-90, but there's apparently still about 12,000 vehicles that make it to the terminus at US-12/US-20.
I-70 in Utah, westbound exit 157. Over half the traffic exits for US 6 towards Salt Lake City.
I'm guessing most of the traffic on the Elgin-O'Hare Expy going east will exit at I-290.
It would be intersting to compare AADTs for traffic taking the Tri-State versus the Edens. The Tri-State is the exit, and has three lanes versus the two going to downtown Chicago on I-94.
Atlanta north Parameter: I-285 WB to I-75. (77,700 through vs 80,600 exiting)
I-75 at US 2 in St. Ignace, Michigan. I believe the split is something like 2:1 traffic leaving vs. continuing.
Mountain Parkway eastbound at Exit 43. Around 6,000 to the KY 15 spur, around 4,000 stays on the Mountain Parkway.
Quote from: JoePCool14 on April 10, 2021, 06:13:17 PM
I'm guessing most of the traffic on the Elgin-O'Hare Expy going east will exit at I-290.
It would be intersting to compare AADTs for traffic taking the Tri-State versus the Edens. The Tri-State is the exit, and has three lanes versus the two going to downtown Chicago on I-94.
Based on IDOT's GIS app, The Tri-State has 127,700 south of the Edens Spur and 179,400 north of the Edens Spur. The Edens Spur east of the Tri-State has 50,700 and somehow goes up to 51,100 east of IL 43 despite the lack of ramps of an eastbound entrance/westbound exit to/from IL 43.
US 41 qualifies at the Edens Spur, with 62,400 to the north of the spur and 114,800 to the south.
I-95 North at the I-295/I-495 complex in DE. I would say more than half of the traffic exits onto I-295 to get to the DMB and NJTP. Then, more than half of what remains exits onto I-495 as the thru route to Philly.
Here's two in the Cincinnati area.
I-74 EB exit 9. More traffic "exits" onto I-275 N than continuing on I-74 E:
(https://i.imgur.com/TTYPQ9C.png)
OH 126 EB exit 32B-C. About 14k of the 20k vehicles on OH 126 exit onto I-71. Note that the I-71 exits are on a C/D ramp, which the map doesn't show well, which is why I'm counting as a single exit. The freeway ends about a mile to the east of the interchange at US 22, so it makes sense:
(https://i.imgur.com/vB0uYDN.png)
I assume more traffic on WB I-80 in western Nebraska exits to I-76 than continues on I-80.
Quote from: DandyDan on April 11, 2021, 05:29:40 AM
I assume more traffic on WB I-80 in western Nebraska exits to I-76 than continues on I-80.
That's not an exit; I-80 → I-76 is the through movement.
^ Depends how you define "through movement". One could also argue that remaining on I-80 is a "through movement".
both ends of the I-40/85 concurrency have most traffic exiting onto I-40. 85 is the through movement at both splits
This one is a bit of a technicality, but lots more people exit onto I-70 from CO470 northbound than continue into Golden.
I would assume it's similar to something like I-79->I-90 vs. Erie.
Chris
My example is one I drive everyday. In the Green Bay area, more southbound I-43 traffic exits onto WI-172 (19,000) than continues south on I-43 (13,000). (If I am reading the traffic counts correctly.)
That is not the case on the west side of town. More traffic continues on I-41 than exits onto WI-172.
Quote from: 1 on April 11, 2021, 06:16:10 AM
Quote from: DandyDan on April 11, 2021, 05:29:40 AM
I assume more traffic on WB I-80 in western Nebraska exits to I-76 than continues on I-80.
That's not an exit; I-80 → I-76 is the through movement.
Quote
kphoger once said-
Yes, you are. You're exiting I-59. The angle of the roadway doesn't matter.
Quote from: jayhawkco on April 11, 2021, 09:18:26 AM
This one is a bit of a technicality, but lots more people exit onto I-70 from CO470 northbound than continue into Golden.
I would assume it's similar to something like I-79->I-90 vs. Erie.
Chris
That's like the OH 126 example I pointed above. When the through movement freeway is close to ending or downgrades to an arterial past the interchange, most vehicles would exit onto the last freeway to freeway interchange. Some other examples of this I know of that possibility could have more exiting traffic, though without data to actually back it up:
MO 364 W at I-64. Through movement west is a 2 lane road.
MO 364 E at I-270. I'm unsure if the through movement have less traffic than the exit to 270 on this one though, as I frequently see Page Ave backed up to an extent.
OH 315 N at I-270 (exit 12). Through movement is a 2 lane road.
I-670 E at I-270 (exit 10). Continues as US 62 east of there.
OH 161 W at I-270 (exit 40). Through movement is 2 lanes while there are 4(!) exit lanes.
US 33 E at I-270 (exit 108). City street through Dublin east if there
I-471 S at I-275 (exit 1). Continues as US 27 south of there.
OH 32 W at I-275. Turns into a 2 lane road about a mile west of I-275
I-69 S at I-465 (exit 200). Unsure about this one, as Binford Blvd looks relatively busy.
nb i-25 at exit 269b (sh 14 west - fort collins)
its really the last 'major' exit before 20-something miles of ... not much. evening rush, most ft collins exits remove the nb traffic from i-25. once you pass 269b, the northernmost 'major' ft collins exit (shut UP, mountain vista drive, you only exist because of the budweiser plant), everything goes much faster to chyoming.
Quote from: 1 on April 11, 2021, 06:16:10 AM
Quote from: DandyDan on April 11, 2021, 05:29:40 AM
I assume more traffic on WB I-80 in western Nebraska exits to I-76 than continues on I-80.
That's not an exit; I-80 → I-76 is the through movement.
Well the numbering continues onto I-80.
Nowadays, I suspect that most of the southbound traffic on I-79 heads down Corridor L (US-19) towards Beckley. Except on WVU home game weekends.
Maybe I-94 to I-894 at the Zoo and Mitchell interchanges in Milwaukee, but I'm not sure.
SB I-75 at the Florida's Turnpike is close to a 50-50 split, but it looks like just over half continue down to Tampa.
A better example would be NB I-75 at I-595. The DOT site for traffic counts is a little murky because it doesn't split AADT by direction on mainlines (not easily, at least), but the counts for the ramps going to EB 595 and the NB Sawgrass Expy are higher than what the count for the NB I-75 mainline.
Same deal for WB I-595 at the same interchange. The interstate ends, but the logical thru movement is straight onto NB I-75. However, the AADT on the ramp to SB I-75 is almost twice that.
Quote from: Roadgeekteen on April 11, 2021, 02:45:24 PM
Quote from: 1 on April 11, 2021, 06:16:10 AM
Quote from: DandyDan on April 11, 2021, 05:29:40 AM
I assume more traffic on WB I-80 in western Nebraska exits to I-76 than continues on I-80.
That's not an exit; I-80 → I-76 is the through movement.
Well the numbering continues onto I-80.
there's also no exits on nebraskas what .... mile? of i-76 except for the end of the highway
Quote from: zachary_amaryllis on April 11, 2021, 03:43:33 PM
Quote from: Roadgeekteen on April 11, 2021, 02:45:24 PM
Quote from: 1 on April 11, 2021, 06:16:10 AM
Quote from: DandyDan on April 11, 2021, 05:29:40 AM
I assume more traffic on WB I-80 in western Nebraska exits to I-76 than continues on I-80.
You're probably right. I-80 is very empty west of I-76. I-76 isn't very busy either, but it's busier than I-80, especially from around Fort Morgan westward.
US 101 north at I-80 east in San Francisco, where 101 switches over from the Bayshore Freeway to the Central Freeway, while most traffic is heading either to the Financial District/South of Market areas or to the Bay Bridge.
I suspect a similar thing might exist at the I-80/US 50 split in West Sacramento, but I-80 exits off itself there due to the 1982 reroutings that eliminated 1968-1982 I-880 through Natomas, so that's not quite the same situation.
Here's one that I wonder if anyone can look into: I-5 at US 101 in the East Los Angeles Interchange, where 5 exits the Santa Ana Freeway for the Golden State Freeway while 101 heads to downtown Los Angeles along the Santa Ana corridor.
In Springfield, US 60 Eastbound loses most of its traffic at US 65. North of there, US 65 loses Northbound over 2/3rds of its traffic to I-44.
I-394 eastbound at I-94 in Minneapolis (160K to 58K)
Close, but not quite. The Durham Freeway (NC-147) [westbound] loses much of its traffic to US-15/US-501 (Fifteen Five-oh-one) but the latest traffic numbers show 45,000 ADT before the interchange and 23,000 ADT between US-15/US-501 and I-85 southbound. This one is interesting since it loses traffic fairly equally to both directions of US-15/US-50 (6,700 northbound and 7,600 southbound). The imbalance there might mean that this could be a real one.
Quote from: thspfc on April 11, 2021, 03:51:15 PM
Quote from: zachary_amaryllis on April 11, 2021, 03:43:33 PM
Quote from: Roadgeekteen on April 11, 2021, 02:45:24 PM
Quote from: 1 on April 11, 2021, 06:16:10 AM
Quote from: DandyDan on April 11, 2021, 05:29:40 AM
I assume more traffic on WB I-80 in western Nebraska exits to I-76 than continues on I-80.
You're probably right. I-80 is very empty west of I-76. I-76 isn't very busy either, but it's busier than I-80, especially from around Fort Morgan westward.
It's pretty close, but hard to know for sure without the directional data.
(https://i.imgur.com/zKZLqEf.png)
My favorite (/sarcasm) is CTH A and WI 26 south of Juneau where more traffic exits to CTH A than continues on WI 26 towards Juneau. Not an interstate or even a busy highway there, but it's still more traffic on a very rural CTH than the state highway. Maybe they'll fix that if WI 26 traffic increases from the two-lane traffic levels currently using the roads. From WisDOT Traffic Counts (https://www.arcgis.com/apps/webappviewer/index.html?id=2e12a4f051de4ea9bc865ec6393731f8).
Quote from: Roadgeekteen on April 10, 2021, 05:23:53 PM
Thinking about the I-90/I-84 exit where I think more traffic exits. My apologies if this has been done before.
I remember discussing this location before and we did establish that more traffic exits.
I can't remember if it was in a similar thread or part of a different discussion. I've spent quite a while searching and cannot find it, so I would applaud anyone that can find it.
Most traffic going southbound on Highway 400 exits at Highway 401, since continuing on the 400 only leads to one exit before the freeway ends.
(https://i.imgur.com/ZSRv2qr.png)
A significant volume of traffic going northbound on Highway 427 exits into Highway 401, with smaller amounts exiting at other exits at this interchange.
If one uses satellite view, the collector/express combined have 8 lanes before the interchange, and after all the ramps leave, it only leaves behind 2 lanes of mainline Highway 427 going through the interchange. (after the interchange, ramps from the 401 and other roads merge with mainline, but only add up to 5 lanes.)
Red represents 401 exits, blue represents other exits, and black is mainline.
(https://i.imgur.com/19f7kZ9.png)
I-471 ends at I-275. The short spur between I-275 and US 27 is technically known as KY 471, and posted as either "To US 27" or "To I-471" depending on direction of travel.
Quote from: Dirt Roads on April 11, 2021, 05:22:34 PM
Close, but not quite. The Durham Freeway (NC-147) [westbound] loses much of its traffic to US-15/US-501 (Fifteen Five-oh-one) but the latest traffic numbers show 45,000 ADT before the interchange and 23,000 ADT between US-15/US-501 and I-85 southbound. This one is interesting since it loses traffic fairly equally to both directions of US-15/US-50 (6,700 northbound and 7,600 southbound). The imbalance there might mean that this could be a real one.
How about the other end of the Durham Freeway? Can't believe that I missed this one. NC-147 goes from 74,500 AADT down to 16,000 AADT south of I-40. 50,500 AADT of that is heading to/from Raleigh on I-40. An unusual feature is the imbalance of traffic toward Chapel Hill on I-40 (7,800 AADT) versus coming from Chapel Hill (6,300 AADT).
I-355 / I-290
I-355 is main flow but listed as an exit.
The east end of I-105 in Los Angeles is at Studebaker Road, well short of I-5, so traffic defaults onto I-605, which comes immediately before that. It's probably because an extension to its parent was planned to give it a proper terminus, but was shot down by opposition from the community in its path.
U.S. 22 at PA 33 near Easton. Thank god, because then Cemetery Curve would be blocked all the time.
I-5 N in Kern County,CA at CA-99. Most traffic exits to CA-99 rather than continuing on I-5. (though this is a TOTSO situation)
Quote from: SeriesE on April 12, 2021, 01:17:41 PM
I-5 N in Kern County,CA at CA-99. Most traffic exits to CA-99 rather than continuing on I-5. (though this is a TOTSO situation)
I'm guessing that local traffic to Bakersfield and Fresno outnumbers long-distance travelers to the Bay Area and Sacramento?
Quote from: bulldog1979 on April 10, 2021, 10:48:57 PM
I-75 at US 2 in St. Ignace, Michigan. I believe the split is something like 2:1 traffic leaving vs. continuing.
Northbound, absolutely. Southbound, I'd guess the numbers are overwhelmingly opposite.
I don't believe it's a huge difference based on the AADT counts, but the majority of traffic on US 395 south exits on CA 14 south rather than continuing on 395.
Quote from: Roadgeekteen on April 12, 2021, 01:19:41 PM
Quote from: SeriesE on April 12, 2021, 01:17:41 PM
I-5 N in Kern County,CA at CA-99. Most traffic exits to CA-99 rather than continuing on I-5. (though this is a TOTSO situation)
I'm guessing that local traffic to Bakersfield and Fresno outnumbers long-distance travelers to the Bay Area and Sacramento?
Yes. There's also another big drop at the I-580 split and traffic doesn't pick up until the I-205 merge near Tracy for the Bay Area to Stockton/Sacramento traffic.
In Winter Garden, FL more SB SR 429 traffic departs at the exit ramp for CR 535 than remains on it. Bottlenecks occur due to this being the ramp end is signalized and narrower than the freeway it departs.
I would assume this happens on I-95 north of Philadelphia. Where most traffic continues on to I-295.
I'm curious about I-78/US 22 west of Allentown. Does more traffic volume leave I-78 and use US 22? I would guess so since the Turnpike interchanges with US 22.
I don't have numbers to back this up right now, but I am pretty sure that most northbound I-15 traffic in Idaho Falls exits to eastbound US-20, rather than continuing north. US-20 serves cities like Rexburg and Rigby, and tourist traffic to Yellowstone, where I-15 continues through a lot of nothing until Butte, MT. Also, US-20 is a freeway, and ITD is studying options to create a new free-flowing US-20 interchange (and they are also making a free flowing right turn on the existing one short-term), so they know it's an important movement.
(https://i.imgur.com/4ioy1Xb.png)
Assuming the numbers are what I suspect, this may be one of the few instances where the majority of 2di traffic is exiting for a non-interstate. I-70 to US-6 in Utah being another good example mentioned earlier.
Quote from: BrianP on April 14, 2021, 08:57:46 AM
I would assume this happens on I-95 north of Philadelphia. Where most traffic continues on to I-295.
I'm curious about I-78/US 22 west of Allentown. Does more traffic volume leave I-78 and use US 22? I would guess so since the Turnpike interchanges with US 22.
Yes. The segment of 78 between 22 and 309 only carries 38 thousand people before going up to 99,000. Meanwhile, 22 carries 50,000 by the actual interchange and even more once it interchanges with 309.
Speaking of which, the 309 freeway in Allentown actually carries about 43,000 people before 22 and 19,000 after.
Quote from: doorknob60 on April 14, 2021, 03:52:36 PM
I don't have numbers to back this up right now, but I am pretty sure that most northbound I-15 traffic in Idaho Falls exits to eastbound US-20, rather than continuing north. US-20 serves cities like Rexburg and Rigby, and tourist traffic to Yellowstone, where I-15 continues through a lot of nothing until Butte, MT. Also, US-20 is a freeway, and ITD is studying options to create a new free-flowing US-20 interchange (and they are also making a free flowing right turn on the existing one short-term), so they know it's an important movement.
(https://i.imgur.com/4ioy1Xb.png)
Assuming the numbers are what I suspect, this may be one of the few instances where the majority of 2di traffic is exiting for a non-interstate. I-70 to US-6 in Utah being another good example mentioned earlier.
Confirmed. The exit ramp has a higher AADT than the segment of I-15 north of that junction.
(https://i.imgur.com/29sT5vG.png)
A few Virginia examples -
The majority of traffic on I-295 South east of Richmond exits towards I-64 East rather than staying on I-295.
2019 figures:
I-295 north of I-64 - 74,000
I-295 south of I-64 - 26,000
I-64 west of I-295 - 37,000
I-64 east of I-295 - 74,000
The majority of traffic on US-17 South in Chesapeake exits at VA-165 Cedar Rd rather than staying on US-17.
2019 figures:
US-17 north of VA-165 - 27,000
US-17 south of VA-165 - 10,000
VA-165 west of US-17 - 13,000
VA-165 east of US-17 - 27,000
The majority of traffic on VA-168 South in Chesapeake exits at Hillcrest Pkwy - mainly bound to VA-168 Business South to avoid the toll road, then rejoining it south of Gallbush Rd - rather than staying on VA-168.
2019 figures:
VA-168 north of Hillcrest Pkwy - 38,000
VA-168 south of Hillcrest Pkwy - 11,000
Quote from: kphoger on April 15, 2021, 02:35:40 PM
Confirmed. The exit ramp has a higher AADT than the segment of I-15 north of that junction.
[img snipped]
It makes it really simple and easy when that's the case. However, it's not necessarily a pre-requisite. It could still qualify even if I-15 north of that junction had volumes higher than 8,100
if the volume of entering traffic was greater than the difference.
One I travel through a lot (unsigned I-296 provides access from NB US-131 to I-96 in either direction and from EB I-96 to SB US-131)
US-131 south of unsigned I-296: 115,081
US-131 between unsigned I-296 and I-96: 52,768
US-131 north of I-96: 73,503
Unsigned I-296 combined: 62,313
Another one in Michigan:
US-10 east of M-115: 7,225
US-10 west of M-115: 4,248
Ramp from WB US-10 to WB M-115: 2,680
Ramp from EB M-115 to EB US-10: 2,754
M-115 west of US-10: 7,126
M-115 east of US-10: 5,625
Non-freeway example (a borderline one as well)
M-45 east of M-231: 12,094
M-45 west of M-231: 6,451
M-231 north of M-45: 8,626
Quote from: webny99 on April 15, 2021, 05:55:19 PM
Quote from: kphoger on April 15, 2021, 02:35:40 PM
Confirmed. The exit ramp has a higher AADT than the segment of I-15 north of that junction.
[img snipped]
It makes it really simple and easy when that's the case. However, it's not necessarily a pre-requisite. It could still qualify even if I-15 north of that junction had volumes higher than 8,100 if the volume of entering traffic was greater than the difference.
Right. Unfortunately, the AADT map considered it all one segment north of the exit, therefore there's only one data point.