Most exits are right exits.
Some exits are left exits.
What are some examples of the elusive center only exit?
(I'm looking for instances where the left and right lanes are through lanes.)
So something like this, but without the U-turn. :spin:
(https://www.aaroads.com/forum/proxy.php?request=http%3A%2F%2Fupload.wikimedia.org%2Fwikipedia%2Fcommons%2F2%2F2d%2FTaguig-c5-kalayaan-2012-01.JPG&hash=7a6dd314deb6188dd15722f53443af7032e30089)
Not a freeway, and technically the through lanes are NY 15/South Ave and not I-490 east, but it was the first thing that came to mind: http://goo.gl/maps/Z8EC6
It's not really marked that way, and it doesn't feel like a "center exit", but it fits the definition I guess. The westbound lanes of US-26 at OR-8: https://www.google.com/maps/@45.5082457,-122.7416839,828m/data=!3m1!1e3 You can stay in the farthest right lane and continue onto US-26 West.
Maybe if the MLK/Coupler Bridge plan had gone through and marked as I-70, I-55/I-64 at the MLK Bridge ramps could have been counted:
Google Aerial (https://maps.google.com/maps?hl=en&ll=38.630454,-90.154699&spn=0.001877,0.004128&t=k&z=19)
Streetview (https://maps.google.com/maps?hl=en&ll=38.630521,-90.154291&spn=0.001877,0.004128&t=k&z=19&layer=c&cbll=38.630769,-90.154142&panoid=xYjDJHVcScF7AXGmV49Akg&cbp=12,248.78,,0,-3.22)
In Atlanta, when I-75 and I-85 split at the northern end, I-75 traffic uses the three right lanes, I-85 uses the next three lanes, and the HOV traffic uses the leftmost lane. I don't know if that (the I-85 exit) counts as using the center lane, but it'll be tough to find examples that fit. Interesting question.
Stony Island Avenue at the Chicago Skyway (I-90) in Chicago:
https://maps.google.com/maps?hl=en&ll=41.756119,-87.586066&spn=0.003248,0.005284&t=h&z=18&layer=c&cbll=41.756227,-87.586065&panoid=Se21OqKjmoYQYWRNzErSIw&cbp=12,189.95,,1,-0.32
There is also a center lane merge:
https://maps.google.com/maps?hl=en&ll=41.755853,-87.585666&spn=0.001624,0.002642&t=h&z=19&layer=c&cbll=41.756028,-87.585676&panoid=3ZQKQGn492HJ3HKCGC1kTg&cbp=12,179.56,,1,2.19
This is the purest example of this that I can think of:
https://www.google.com/maps/@34.339502,-118.518407,3a,49.2y,113h,86.59t/data=!3m4!1e1!3m2!1s1MYPCMQeBa9xGJFGeepYhg!2e0
I-5 at CA 14.
Not a pure example by any means but spiritually similar... the ramp from the Henry Hudson Parkway to I-95 splits three ways, the middle goes to I-95 north and the left and right go to I-95 south:
https://www.google.com/maps/@40.846803,-73.943059,3a,75y,356.14h,87.8t/data=!3m4!1e1!3m2!1sm1PsPmyVvN3b6SF_1cE4YQ!2e0
Westbound Parker Road (CO-83) at I-225 (https://goo.gl/maps/rAa5k): Measuring from the median, 2 lanes continue westbound to Parker Road, an option lane and an exit-only lane diverge to I-225 southbound, and a lane exits to a split between I-225 northbound or Parker Road westbound. The additional lane provides a way for traffic exiting the Heather Gardens neighborhood to the northeast to continue on Parker Road from a constrained ramp without weaving across 3 lanes of high-speed traffic in a very short distance.