The past few times I've traveled to Dallas (Arlington to be exact), I've noticed this sign on I-20 westbound beneath the I-635 interchange:
https://www.google.com/maps/@32.7015814,-96.6241303,3a,75y,262.33h,87.08t/data=!3m6!1e1!3m4!1s_SVN0mrLYV0-0ef5I5xHYg!2e0!7i13312!8i6656
I think it's very interesting because you would think that from the mainline, not from an incoming ramp, you should be able to access every exit from the interstate. Excluding of course that some streets are only accessible in one direction on a freeway. Truth be told, this US 175 east exit can be accessed, you just have to cross 3 lanes of incoming I-635 traffic in about 1/8 of a mile, so it isn't totally a case of you can't make the exit. I can't imagine that many travelers on westbound I-20 would want to exit back and nearly make a u-turn to go east on US 175.
This is very likely a remnant when I-20 followed what is now US 80 from Terrell to Dallas. After the time when I-20 followed the DFW Turnpike between the city centers, it turned southbound in Mesquite along the Dallas loop (LBJ Freeway/I-635) which would have made this exit easily accessible. It was only in the last 30 years that the piece of current I-20 was completed between Terrell and Balch Springs. I-635 is really the original through route.
But the sign remains as a command (suggestion?) Any other examples?
Here's the next gantry:
https://www.google.com/maps/@32.6986174,-96.6280578,3a,75y,247.27h,87.08t/data=!3m6!1e1!3m4!1sjSlIXXDDVgOMRiU1h8NhTQ!2e0!7i13312!8i6656
:-D
Until the ramp was relocated, this existed in Columbus (https://www.google.com/maps/@39.956265,-82.9834526,3a,75y,194.84h,82.08t/data=!3m7!1e1!3m5!1smSNHYEFlJQUxOyS8b9BuPg!2e0!6s%2F%2Fgeo0.ggpht.com%2Fcbk%3Fpanoid%3DmSNHYEFlJQUxOyS8b9BuPg%26output%3Dthumbnail%26cb_client%3Dmaps_sv.tactile.gps%26thumb%3D2%26w%3D203%26h%3D100%26yaw%3D136.7531%26pitch%3D0!7i13312!8i6656). While not an Interstate, a similar thing happens on SR 315 a couple miles away (https://www.google.com/maps/@39.9655485,-83.020868,3a,64.1y,176.81h,93.28t/data=!3m6!1e1!3m4!1sdVrwdrsZYQifISvVu_BNUA!2e0!7i13312!8i6656).
Generally, they use pylons or double-white lines in Washington to denote that it's unsafe to jump X-lanes to make an exit.
Similarly, there's an entrance to northbound I-75 in Cincinnati that cannot use I-75. It only offers access to I-74.
There's two HOV left-hand exits that have extra striping to prevent people from merging all the way across to exit off: at S. Everett Freeway Station (S 112th Street) and SR 526; and at Lynnwood Transit Center (44th Avenue W) and I-405/SR 525 in Lynnwood.
I-84 Eastbound in Boise uses a separate ramp wrapping around the I-184 interchange for people wanting to exit at Cole Rd./Overland Rd. to avoid this problem. This is easy because it's a Y interchange, not 4 way so it did not require grade separation, but this is the right way to handle this. https://www.google.com/maps/@43.5929805,-116.2811057,808m/data=!3m1!1e3
This section also has an impressively wide stretch of freeway for a city this size. 7 lanes wide on the eastbound side (though only 3 westbound lanes at this point). A bit down the road you have 5 westbound lanes and 6 eastbound lanes, for a total of 11 lanes wide. Wider than anything in Oregon, which is sad because Portland could sure use some wider freeways.
What's interesting here is that so far, only the Dallas example creates the prohibition by signage alone. I've seen various other examples that use lane striping or even physical barriers to prohibit exiting, but in this case the exit is perfectly permissible except by the presence of that regulatory sign.
I thought there was also an exit not accessible on I-35E in downtown Dallas just after the Mixmaster with I-30 I remembered seeing, but it's actually an exit repeated. Exits 428C and 428E are identical going northbound. Both are for Reunion Blvd and Commerce Street. 428E serves incoming I-30 traffic on the far left lanes, but you still theoretically could reach it from mainline I-35E, it just wouldn't be easy.
Quote from: doorknob60 on September 24, 2015, 04:06:30 PM
I-84 Eastbound in Boise uses a separate ramp wrapping around the I-184 interchange for people wanting to exit at Cole Rd./Overland Rd. to avoid this problem. This is easy because it's a Y interchange, not 4 way so it did not require grade separation, but this is the right way to handle this. https://www.google.com/maps/@43.5929805,-116.2811057,808m/data=!3m1!1e3
This section also has an impressively wide stretch of freeway for a city this size. 7 lanes wide on the eastbound side (though only 3 westbound lanes at this point). A bit down the road you have 5 westbound lanes and 6 eastbound lanes, for a total of 11 lanes wide. Wider than anything in Oregon, which is sad because Portland could sure use some wider freeways.
Bingo! 110% agreement. It would cost as much as a Ford-class CVN to redo PDX's freeways but what an improvement it would be.
Rick
I remember the one in Downtown Dallas having a small green guide sign saying "DO NOT EXIT TO COMMERCE ST" Of course, a green sign is wrong for a regulatory message.
Also of interest it SB I-35E at Commonwealth. You have to move over two lanes that come in from SH 183 in a very short distance, but the movement is allowed and signed.
https://www.google.com/maps/@32.8165053,-96.8683976,3a,26.8y,157.59h,89.56t/data=!3m6!1e1!3m4!1s7iZGtoGJtX34OsJ69cjaFw!2e0!7i13312!8i6656 (https://www.google.com/maps/@32.8165053,-96.8683976,3a,26.8y,157.59h,89.56t/data=!3m6!1e1!3m4!1s7iZGtoGJtX34OsJ69cjaFw!2e0!7i13312!8i6656)
This is I-43 north in Milwaukee. Before the Marquette Interchange was rebuilt, I-43 north traffic could exit into this tunnel to Kilbourn Ave. After the rebuild, only the ramp from I-94 East to I-43 North has access to this tunnel.
https://www.google.com/maps/@43.0391545,-87.9248431,3a,37.5y,16.07h,83.06t/data=!3m6!1e1!3m4!1sc-XxMX3FKI1ZqbraEqN4mQ!2e0!7i13312!8i6656
In the same area, this is I-794 at Plankinton Ave where the mainline used to be able to exit. After the Marquette Interchange rebuild, only the ramp from I-43 South, and I-43 North/I-94 West to I-794 East can exit here.
https://www.google.com/maps/@43.0355706,-87.9170755,3a,75y,101.33h,73.59t/data=!3m6!1e1!3m4!1shgDL-tL2cfQrm0MU8ISAmA!2e0!7i13312!8i6656
This is on I-94 where I-294 North Ends, and traffic is prohibited from exiting onto Deerfield Rd. (There is a tunnel exit underneath I-294 to Deerfield Rd about 1/4 mile earlier, so I don't know if this qualifies.)
https://www.google.com/maps/@42.157193,-87.8741961,3a,75y,8.26h,87.78t/data=!3m6!1e1!3m4!1s-vt9I2V1n2Q30nLWGRO5jQ!2e0!7i13312!8i6656?hl=en
Quote from: peterj920 on September 25, 2015, 12:40:19 AM
This is I-43 north in Milwaukee. Before the Marquette Interchange was rebuilt, I-43 north traffic could exit into this tunnel to Kilbourn Ave. After the rebuild, only the ramp from I-94 East to I-43 North has access to this tunnel.
https://www.google.com/maps/@43.0391545,-87.9248431,3a,37.5y,16.07h,83.06t/data=!3m6!1e1!3m4!1sc-XxMX3FKI1ZqbraEqN4mQ!2e0!7i13312!8i6656
In the same area, this is I-794 at Plankinton Ave where the mainline used to be able to exit. After the Marquette Interchange rebuild, only the ramp from I-43 South, and I-43 North/I-94 West to I-794 East can exit here.
https://www.google.com/maps/@43.0355706,-87.9170755,3a,75y,101.33h,73.59t/data=!3m6!1e1!3m4!1shgDL-tL2cfQrm0MU8ISAmA!2e0!7i13312!8i6656
This is on I-94 where I-294 North Ends, and traffic is prohibited from exiting onto Deerfield Rd. (There is a tunnel exit underneath I-294 to Deerfield Rd about 1/4 mile earlier, so I don't know if this qualifies.)
https://www.google.com/maps/@42.157193,-87.8741961,3a,75y,8.26h,87.78t/data=!3m6!1e1!3m4!1s-vt9I2V1n2Q30nLWGRO5jQ!2e0!7i13312!8i6656?hl=en
Why was traffic closed off from the top two examples up there when the Marquette was rebuilt? They could've made a flyover.
Quote from: doorknob60 on September 24, 2015, 04:06:30 PM
I-84 Eastbound in Boise uses a separate ramp wrapping around the I-184 interchange for people wanting to exit at Cole Rd./Overland Rd. to avoid this problem. This is easy because it's a Y interchange, not 4 way so it did not require grade separation, but this is the right way to handle this. https://www.google.com/maps/@43.5929805,-116.2811057,808m/data=!3m1!1e3
This section also has an impressively wide stretch of freeway for a city this size. 7 lanes wide on the eastbound side (though only 3 westbound lanes at this point). A bit down the road you have 5 westbound lanes and 6 eastbound lanes, for a total of 11 lanes wide. Wider than anything in Oregon, which is sad because Portland could sure use some wider freeways.
Hopefully once all the construction is done around there the speed limit is raised from 65 mph. It sucks going 80 with 2 lanes and then dropping down to 65 on a super wide stretch of freeway that seems like it can easily handle faster speeds (and does given many drivers I see do 70-75 there). However I don't think that will happen because I believe Idaho's maximum urban freeway speed limit is 65, which is already faster than a lot of urban speed limits around the country (Seattle/New Orleans is 60, Portland is 55 and drops to 50 in the city center).
Quote from: noelbotevera on September 25, 2015, 03:39:15 PM
Quote from: peterj920 on September 25, 2015, 12:40:19 AM
This is I-43 north in Milwaukee. Before the Marquette Interchange was rebuilt, I-43 north traffic could exit into this tunnel to Kilbourn Ave. After the rebuild, only the ramp from I-94 East to I-43 North has access to this tunnel.
https://www.google.com/maps/@43.0391545,-87.9248431,3a,37.5y,16.07h,83.06t/data=!3m6!1e1!3m4!1sc-XxMX3FKI1ZqbraEqN4mQ!2e0!7i13312!8i6656
In the same area, this is I-794 at Plankinton Ave where the mainline used to be able to exit. After the Marquette Interchange rebuild, only the ramp from I-43 South, and I-43 North/I-94 West to I-794 East can exit here.
https://www.google.com/maps/@43.0355706,-87.9170755,3a,75y,101.33h,73.59t/data=!3m6!1e1!3m4!1shgDL-tL2cfQrm0MU8ISAmA!2e0!7i13312!8i6656
This is on I-94 where I-294 North Ends, and traffic is prohibited from exiting onto Deerfield Rd. (There is a tunnel exit underneath I-294 to Deerfield Rd about 1/4 mile earlier, so I don't know if this qualifies.)
https://www.google.com/maps/@42.157193,-87.8741961,3a,75y,8.26h,87.78t/data=!3m6!1e1!3m4!1s-vt9I2V1n2Q30nLWGRO5jQ!2e0!7i13312!8i6656?hl=en
Why was traffic closed off from the top two examples up there when the Marquette was rebuilt? They could've made a flyover.
because flyovers are expensive, and it likely wasn't in the budget.
Quote from: Ace10 on September 25, 2015, 05:56:23 PM
Quote from: doorknob60 on September 24, 2015, 04:06:30 PM
I-84 Eastbound in Boise uses a separate ramp wrapping around the I-184 interchange for people wanting to exit at Cole Rd./Overland Rd. to avoid this problem. This is easy because it's a Y interchange, not 4 way so it did not require grade separation, but this is the right way to handle this. https://www.google.com/maps/@43.5929805,-116.2811057,808m/data=!3m1!1e3
This section also has an impressively wide stretch of freeway for a city this size. 7 lanes wide on the eastbound side (though only 3 westbound lanes at this point). A bit down the road you have 5 westbound lanes and 6 eastbound lanes, for a total of 11 lanes wide. Wider than anything in Oregon, which is sad because Portland could sure use some wider freeways.
Hopefully once all the construction is done around there the speed limit is raised from 65 mph. It sucks going 80 with 2 lanes and then dropping down to 65 on a super wide stretch of freeway that seems like it can easily handle faster speeds (and does given many drivers I see do 70-75 there). However I don't think that will happen because I believe Idaho's maximum urban freeway speed limit is 65, which is already faster than a lot of urban speed limits around the country (Seattle/New Orleans is 60, Portland is 55 and drops to 50 in the city center).
EDIT: I read your comment wrong, I thought you said raised
to 65. The below might not make as much sense. As nice as 70 or even 75 would be, and would really fit the flow of traffic, especially between Garrity Blvd and Meridian, I don't see it happening. I'm just glad the speed limit isn't 60 or 55, because I tend to gravitate to 70-75 here, which is mostly safe in the 65 zone. Though, that shitty section from Franklin in Nampa to Caldwell is a mess, and they need to upgrade that badly. I wouldn't want to see that part any higher than 65 in its current state; I sometimes question if 65 is too fast here (I say that, but I've certainly zoomed through it at 75 more than once).
It will for sure be 65 when it's done. The construction keeps "moving around" as they work on different parts of the highway. I've noticed a trend where when it drops down to 3 lanes (and shortly before), the speed limit drops to 55. When it gets its 4th lane back, it goes back up to 65. Right now (or, as of like a week ago), going eastbound, it jumps back up to 65 between the Meridian Rd. and Eagle Rd. interchanges (after dropping to 55 west of the Meridian interchange). But westbound, it's 55 from around the Cloverdale overpass all the way past Meridian Rd. And this changes constantly. But they're pretty good about putting 65 in some places even within the construction zone.
My biggest question is what will happen to the currently 55 zone between Broadway and Gowen. This 55 zone sucks, no reason for that one to be so low (the ones around Meridian make sense; this one I drove through at 80 a few weeks ago). Before the construction, it was 75 out here. I'm not sure if it was ever raised to 80 before they started construction. So, when it's done, will it go to 75, 80, or will they lower it to 65 to match the rest of the urban section?
In Columbus, northbound I-71 can't exit to 5th Ave; only traffic entering from Convention Ctr Dr, 4th St, or westbound I-670 may exit there. A full concrete barrier makes it impossible (since the east segment of 670 was constructed in the 90s). On the southbound side, they braided the 5th Ave entrance ramp with the exit to 670; not sure why they didn't do similar braiding northbound.
When I first saw the thread title I was thinking of something more like this:
https://www.google.com/maps/@39.0929178,-94.6405135,3a,75y,292.11h,97.59t/data=!3m6!1e1!3m4!1sZjb6kTyUDoz5hVxun6wW6g!2e0!7i13312!8i6656
where a ramp off an interstate leads directly into a place not open to the general public.
Quote from: noelbotevera on September 25, 2015, 03:39:15 PM
Quote from: peterj920 on September 25, 2015, 12:40:19 AM
This is I-43 north in Milwaukee. Before the Marquette Interchange was rebuilt, I-43 north traffic could exit into this tunnel to Kilbourn Ave. After the rebuild, only the ramp from I-94 East to I-43 North has access to this tunnel.
https://www.google.com/maps/@43.0391545,-87.9248431,3a,37.5y,16.07h,83.06t/data=!3m6!1e1!3m4!1sc-XxMX3FKI1ZqbraEqN4mQ!2e0!7i13312!8i6656
In the same area, this is I-794 at Plankinton Ave where the mainline used to be able to exit. After the Marquette Interchange rebuild, only the ramp from I-43 South, and I-43 North/I-94 West to I-794 East can exit here.
https://www.google.com/maps/@43.0355706,-87.9170755,3a,75y,101.33h,73.59t/data=!3m6!1e1!3m4!1shgDL-tL2cfQrm0MU8ISAmA!2e0!7i13312!8i6656
This is on I-94 where I-294 North Ends, and traffic is prohibited from exiting onto Deerfield Rd. (There is a tunnel exit underneath I-294 to Deerfield Rd about 1/4 mile earlier, so I don't know if this qualifies.)
https://www.google.com/maps/@42.157193,-87.8741961,3a,75y,8.26h,87.78t/data=!3m6!1e1!3m4!1s-vt9I2V1n2Q30nLWGRO5jQ!2e0!7i13312!8i6656?hl=en
Why was traffic closed off from the top two examples up there when the Marquette was rebuilt? They could've made a flyover.
Before the Marquette Interchange was rebuilt, traffic from those freeway to freeway ramps merged from the left, so there wasn't any crossover traffic with motorists trying to exit and merging traffic. After the rebuild, all exits and merge points were on the right. On I-43, a new ramp was built to Michigan Ave to replace access to the Kilbourn Tunnel, and on I-794, an exit was added to St Paul
Ave to replace Plankinton Ave. The ramps are only there to replace the lost access, and they are not full interchanges. The Marquette Interchange is a very large interchange as is in the middle of Downtown Milwaukee, and there are many flyover ramps in a small space. There really wasn't a way to add them for local ramps due to space limitations.
Heck, if an exit cannot be accessed from a mainline, don't number it as part of that, but instead number it as part of the road from which you actually can use the exit.
Quote from: UCFKnights on September 27, 2015, 11:40:45 AM
There doesn't seem to be any actual restriction on the first one (google street view's vehicle seems to have no issue driving on that ramp and that service road), while the second one is actually strictly buses only (street view did not drive that ramp)
Street View did however have to make a U turn after taking that ramp. As I see it the reason the message is yellow and not white is because a cop cannot give you a ticket for using the ramp for non-railroad purposes. However since it leads to private property you may get in trouble for trespassing if you go there, should the railroad press charges.
In the Hartford area, if there's a left hand entrance/exit with a right hand one within a mile, you'll see a sign like this on the entrance ramp.
https://goo.gl/maps/3kgiXpZjVrp
Between exits 175 and 176 on I-5 in Shoreline, WA, there's a full diamond interchange serving a King County Metro bus base that you can't exit off at: https://www.google.com/maps/@47.7439181,-122.3297554,3a,49y,20.4h,86.76t/data=!3m6!1e1!3m4!1sIxi_JtAIC2tO6ChjxQd9yg!2e0!7i13312!8i6656
For now the LEFT exit to South Street on Westbound I-4 in Downtown Orlando is one since the first day of construction of not so needed Amway Centre (as the former Amway was fine, but that is another story) as the exit was never reopened after the arena was completed. The construction of that new not so needed indoor stadium is why the ramp closed as South Street itself was closed. When South Street reopened either FDOT or the city decided to keep the jersey barriers in place and remove the brand new signage for that particular ramp that costed us taxpayers a pretty good penny to be made and installed.
Quote from: Duke87 on September 27, 2015, 01:37:20 PM
As I see it the reason the message is yellow and not white is because a cop cannot give you a ticket for using the ramp for non-railroad purposes. However since it leads to private property you may get in trouble for trespassing if you go there, should the railroad press charges.
I enjoy your suggestion that this much thought went into the selection of colors for this sign. :-)
Quote from: Duke87 on September 27, 2015, 01:37:20 PM
Quote from: UCFKnights on September 27, 2015, 11:40:45 AM
There doesn't seem to be any actual restriction on the first one (google street view's vehicle seems to have no issue driving on that ramp and that service road), while the second one is actually strictly buses only (street view did not drive that ramp)
Street View did however have to make a U turn after taking that ramp. As I see it the reason the message is yellow and not white is because a cop cannot give you a ticket for using the ramp for non-railroad purposes. However since it leads to private property you may get in trouble for trespassing if you go there, should the railroad press charges.
google's street view vehicle seems to go all the way down to the entrance ramp to get back onto the highway? there is also no "no trespassing" signs visible from the street view? it appears to be a maintained and signed as a public road, just for the service of the trains
Quote from: UCFKnights on September 28, 2015, 12:35:45 AM
Quote from: Duke87 on September 27, 2015, 01:37:20 PM
Quote from: UCFKnights on September 27, 2015, 11:40:45 AM
There doesn't seem to be any actual restriction on the first one (google street view's vehicle seems to have no issue driving on that ramp and that service road), while the second one is actually strictly buses only (street view did not drive that ramp)
Street View did however have to make a U turn after taking that ramp. As I see it the reason the message is yellow and not white is because a cop cannot give you a ticket for using the ramp for non-railroad purposes. However since it leads to private property you may get in trouble for trespassing if you go there, should the railroad press charges.
google's street view vehicle seems to go all the way down to the entrance ramp to get back onto the highway? there is also no "no trespassing" signs visible from the street view? it appears to be a maintained and signed as a public road, just for the service of the trains
Sometimes I'm convinced that Google ends up driving through a lot of areas they're not "supposed" to be, and then they just don't publish those particular images, leading to some rather obvious "dead ends" in Street View coverage.
Quote from: hbelkins on September 23, 2015, 08:45:25 PM
Similarly, there's an entrance to northbound I-75 in Cincinnati that cannot use I-75. It only offers access to I-74.
But that's supposed to change with the rebuild of the Hopple Street interchange -- specifically, the ramp from Hopple to I-74 that you mention. That ramp will be expanded to have a lane that will enter I-75 just north of the I-74 interchange.
Stretching the rules a bit because this isn't an interstate, but it is a freeway:
On the freeway part of Loop 375 around El Paso, the exit for Sergeant Major Blvd. (on Fort Bliss) is a regular diamond-style exit that has full-size BGSs saying the exit is not open to the public, but nothing stopping you from exiting. In fact, bicycles are required to use the exit and then the on-ramp to get back on the freeway.
(https://www.aaroads.com/forum/proxy.php?request=http%3A%2F%2Fi.imgur.com%2Fd0hr5C4.png&hash=50e51a97ef1a6a65517420eb60896cd3beb0b887)
https://goo.gl/maps/oNib9eh3e4A2
The I-94/M-10 interchange in downtown Detroit has left-hand exits and entrances in all four directions (NB to WB, SB to EB, WB to SB, and EB to NB). Signs on the right-hand entrance ramps preceding this interchange prohibit entering traffic from using the left exits, for example:
https://goo.gl/maps/yofwwLSCsM52
On those left-hand ramps, signs prohibit traffic from using the first right-hand exit after merging, for example:
https://goo.gl/maps/LWa89zy6rzM2 (Unrelated note: Gotta love Michigan's false plywood decking on deteriorating bridges!)
There are no barriers preventing these moves and I see plenty of traffic ignoring the signs and cutting across lanes to access their exits.
The entrance ramp to westbound M-8 (Davison Freeway) from M-1 (Woodward Avenue) has a sign prohibiting entering traffic from using the left-hand exit ahead to southbound M-10.
https://goo.gl/maps/hJ7Vn4adXq52
Interestingly, the same situation exists on the left-hand ramp from northbound US-131 to westbound I-96 near Grand Rapids. That ramp has its own exit to northbound Alpine Avenue, but entering traffic wanting to exit to southbound Alpine Avenue has to quickly cut across two lanes of I-96 traffic in less than 1/4 mile after merging to access that ramp. But in this case, the movement is not prohibited and the overhead BGS instructs motorists to do so. So why is it okay here?
https://goo.gl/maps/Y5q32DP3pXE2
The Pennsylvania Turnpike is a half-example. There are a few E-ZPass only exits, and Interstate 76 is a mainline Interstate; however, the Turnpike is a toll road and there's a fair number of E-ZPass users.
I *think* I-95 Exit 56, Keith Avenue in Baltimore, is a hazmat-only exit.
Quote from: epzik8 on December 25, 2016, 02:45:23 PM
The Pennsylvania Turnpike is a half-example. There are a few E-ZPass only exits, and Interstate 76 is a mainline Interstate; however, the Turnpike is a toll road and there's a fair number of E-ZPass users.
I *think* I-95 Exit 56, Keith Avenue in Baltimore, is a hazmat-only exit.
Well, hazmats must exit there, but you can also exit there to avoid the toll.
As you can see. (https://www.google.com/maps/@39.2715411,-76.55623,3a,75y,223.25h,88.06t/data=!3m6!1e1!3m4!1sA0b36ryyGDhF3EyZYmcy-g!2e0!7i13312!8i6656)
Quote from: JMoses24 on February 04, 2016, 03:42:15 AM
Quote from: hbelkins on September 23, 2015, 08:45:25 PM
Similarly, there's an entrance to northbound I-75 in Cincinnati that cannot use I-75. It only offers access to I-74.
But that's supposed to change with the rebuild of the Hopple Street interchange -- specifically, the ramp from Hopple to I-74 that you mention. That ramp will be expanded to have a lane that will enter I-75 just north of the I-74 interchange.
As of December, 2016, that reconstruction is largely complete, and the northbound ramp from Hopple leads to both 74 and 75. As a side effect, the decision point on northbound 75 on whether to stay on 75 or take 74 has moved southward by probably 1/2 mile. It is catching a lot of drivers off guard.
Before the recent reconstruction of the whole I-694/US-10/MN-51/Hamline Ave area, you weren't allowed to exit onto Lexington Ave if you were coming from SB Hamline Ave onto EB I-694. (https://goo.gl/maps/UeZgG3uToxK2)
https://www.google.com/maps/@26.1664766,-80.8277516,3a,75y,299.28h,63.66t/data=!3m6!1e1!3m4!1sY9ks7TKOLcorvEyM3-AM7Q!2e0!7i13312!8i6656
This is on the Alligator Alley section of I-75 and appears to be for water management personnel only (and maybe the occasional State Trooper).
Quote from: MNHighwayMan on December 31, 2016, 04:03:27 PM
Before the recent reconstruction of the whole I-694/US-10/MN-51/Hamline Ave area, you weren't allowed to exit onto Lexington Ave if you were coming from SB Hamline Ave onto EB I-694. (https://goo.gl/maps/UeZgG3uToxK2)
There was also a "NO CROSSING TO LYNDALE EXIT" on westbound MN 62 entering the I-35W mess before that was rebuilt.
Quote from: TheHighwayMan394 on December 31, 2016, 07:22:37 PM
Quote from: MNHighwayMan on December 31, 2016, 04:03:27 PM
Before the recent reconstruction of the whole I-694/US-10/MN-51/Hamline Ave area, you weren't allowed to exit onto Lexington Ave if you were coming from SB Hamline Ave onto EB I-694. (https://goo.gl/maps/UeZgG3uToxK2)
There was also a "NO CROSSING TO LYNDALE EXIT" on westbound MN 62 entering the I-35W mess before that was rebuilt.
Oh yes. I'm pretty sure there used to be at least one more somewhere in the Twin Cities but I cannot remember where it was. Maybe that was it and my mind isn't connecting them.
In Duluth there is a "DO NOT CROSS TO GRAND AVENUE EXIT" sign on southbound I-35 if you enter from the Central Avenue on-ramp. MN 23/Grand is a left exit almost immediately after entering the freeway.
Quote from: noelbotevera on December 25, 2016, 02:49:07 PM
Quote from: epzik8 on December 25, 2016, 02:45:23 PM
The Pennsylvania Turnpike is a half-example. There are a few E-ZPass only exits, and Interstate 76 is a mainline Interstate; however, the Turnpike is a toll road and there's a fair number of E-ZPass users.
I *think* I-95 Exit 56, Keith Avenue in Baltimore, is a hazmat-only exit.
Well, hazmats must exit there, but you can also exit there to avoid the toll.
As you can see. (https://www.google.com/maps/@39.2715411,-76.55623,3a,75y,223.25h,88.06t/data=!3m6!1e1!3m4!1sA0b36ryyGDhF3EyZYmcy-g!2e0!7i13312!8i6656)
Or you can exit there just because it's a normal exit and you may want to do something near that exit.
Going back to Epzik...that's a normal exit. The additional signage is simply telling Hazmats they must take that exit. It'll be similar in nature to signage on the PA Turnpike (for example) that informs Hazmats there's a tunnel ahead, and they must take the next exit coming up.
Quote from: empirestate on September 24, 2015, 04:25:44 PM
What's interesting here is that so far, only the Dallas example creates the prohibition by signage alone. I've seen various other examples that use lane striping or even physical barriers to prohibit exiting, but in this case the exit is perfectly permissible except by the presence of that regulatory sign.
Why are these exits prohibited? Is it because it would take unsafe maneuvers to access them?
Quote from: TravelingBethelite on January 02, 2017, 04:43:26 PM
Quote from: empirestate on September 24, 2015, 04:25:44 PM
What's interesting here is that so far, only the Dallas example creates the prohibition by signage alone. I've seen various other examples that use lane striping or even physical barriers to prohibit exiting, but in this case the exit is perfectly permissible except by the presence of that regulatory sign.
Why are these exits prohibited? Is it because it would take unsafe maneuvers to access them?
Yes; typically it would require changing too many lanes in too short a distance to be considered safe, or otherwise create an unsafe weaving situation.
Quote from: empirestate on January 02, 2017, 09:19:56 PM
Quote from: TravelingBethelite on January 02, 2017, 04:43:26 PM
Quote from: empirestate on September 24, 2015, 04:25:44 PM
What's interesting here is that so far, only the Dallas example creates the prohibition by signage alone. I've seen various other examples that use lane striping or even physical barriers to prohibit exiting, but in this case the exit is perfectly permissible except by the presence of that regulatory sign.
Why are these exits prohibited? Is it because it would take unsafe maneuvers to access them?
Yes; typically it would require changing too many lanes in too short a distance to be considered safe, or otherwise create an unsafe weaving situation.
For example, take the I-70/I-71 case in Columbus that was recently removed (https://www.google.com/maps/@39.9543938,-82.987975,3a,72.2y,264.29h,72.55t/data=!3m7!1e1!3m5!1saURVYcZCO-9wPE63ic8jmA!2e0!5s20140701T000000!7i13312!8i6656). Very heavy merge in the foreground, ramp departs in the background. Traffic from I-71 couldn't use the ramp. In the other direction, the corresponding entrance ramp can't be used to access I-71 NB, again because of how much traffic you'd have to cross.
I-71 has no access to I-471's ramp to Liberty Street at all (there's a jersey barrier separating the two), and the onramp from I-471 North to 71 North cannot use Exit 2 to Reading Road without crossing all lanes of I-71.
Oh, and in the other direction, the onramp from Reading cannot access I-471 southbound without crossing all lanes of I-71. Of course, both movements involving Reading Road can be done via ramps to and from the Liberty/Reading intersection (the aforementioned Liberty Street ramp is one).
Quote from: CrystalWalrein on December 31, 2016, 06:28:59 PM
https://www.google.com/maps/@26.1664766,-80.8277516,3a,75y,299.28h,63.66t/data=!3m6!1e1!3m4!1sY9ks7TKOLcorvEyM3-AM7Q!2e0!7i13312!8i6656
This is on the Alligator Alley section of I-75 and appears to be for water management personnel only (and maybe the occasional State Trooper).
Actually, I'm pretty sure fishermen are allowed to use those as well, for access to the canal.
Not quite the same as the OP requested, since the ramp for this exit begins before the toll both, but here is I-88 in Oak Brook IL:
(https://www.aaroads.com/forum/proxy.php?request=http%3A%2F%2Fi67.tinypic.com%2F29pbz9d.jpg&hash=a81c31b0196dcc0d11d65163789c31bbe8946e2c)
https://www.google.com/maps/@41.8478298,-87.9417185,3a,37.5y,233.52h,95.32t/data=!3m6!1e1!3m4!1s1Ax4WVB15hy6EqVsNPbT-g!2e0!7i13312!8i6656