Is this the worlds tightest trumpet interchange?

[QuietInRealLife]

Might very well be...

[paully]

In terms of that right-angled bend - wow!

This one in Cumbernauld must run it close in terms of maximum speed though: https://goo.gl/maps/j3Z5oZCcT542

[Johnathan404]

I believe the tightest loops can be found on the A38 at Burton-on-Trent, and on the A371 at Axbridge.

[MotorwayGuy]

Wow, I wonder what whoever designed that must have been smoking.

[Bryn666]

There are several in the Netherlands, most of which are designed for a future extension. That one seems to be an oddity.

[Chris5156]

There are several in the Netherlands, most of which are designed for a future extension. That one seems to be an oddity.

It does look like a Netherlands speciality, where an off-the-shelf design is used even though one of the roads you'd expect to be present is missing. It's very hard to see how it would ever be extended with a road continuing further north.

My favourite tight trumpet interchange is this one on the A23.

[Truvelo]

Are there any trumpets which aren't tight?

[firefly]

It does look like a Netherlands speciality, where an off-the-shelf design is used even though one of the roads you'd expect to be present is missing. It's very hard to see how it would ever be extended with a road continuing further north.

Which is a strong hint that the junction is older than those parts of the airport which is now in the way of the originally intended road expansion.

[LeslieB]

The Burton north trumpet is certainly very tight.


But you would also have to mention the A50 to M6 northbound at Stoke as well

[brombeer]

It does look like a Netherlands speciality, where an off-the-shelf design is used even though one of the roads you'd expect to be present is missing. It's very hard to see how it would ever be extended with a road continuing further north.

Which is a strong hint that the junction is older than those parts of the airport which is now in the way of the originally intended road expansion.

This junction was rebuilt something like 15-20 years ago. By then the land North of the junction was already in use as airport land and there was no way that the intersecting road would ever be extended. The reason why they built the junction this way has everything to do with that airport land North of the motorway. The planes and the bridge that you now see to the right of the junction used not to be there. In that area, there was a proper trumpet. But this area had to be redeveloped in order to increase airport capacity into its current use as off-terminal platform. So the normal trumpet went and the original trumpet was "reversed" into something that is no real trumpet anymore (but more an oversized off-the-shelf normal junction). The airport is king in this area and there was not enough space for more.

Having said that, it is indeed a Dutch specialty to not build a trumpet where the intersecting road goes only one way. Never really understood what drives this; in many cases it might be about extensions once planned, or at least to retain all options.

[firefly]

I believe that the junction was rebuilt something like 15-20 years ago. By then the land North of the junction was already in use as airport land and there was no way that the intersecting road would ever be extended.

Who says that the intersecting road was intended to be extended. It looks to me more likely that an additional would would have joint this junction from the north just opposite of the slip road down to the motorway. And the parking positions, which occupy the plot of land where this road could have been built, look so squeezed in that they must surely be younger than the motorway junction.

[mapboy]

You can see another one of those Dutch specialities under construction near Schipol here - https://goo.gl/maps/p5mKuZJSJbB2

[jackal]

Might very well be...

Here's a competitor. This seems to be a standard temporary terminus design in the Netherlands.

Not a trumpet but this otherwise freeflow Dutch interchange has such a tight bend at one point that a give way is used Possibly this exploits a design standard loophole as tighter turns are possible at a T-junction, similar to many 'false' roundabouts in the UK. You can see from Google Earth that the upgrade is very recent and replaced a more conventional diamond interchange.

[RoadsMaps]

You can see another one of those Dutch specialities under construction near Schipol here - https://goo.gl/maps/p5mKuZJSJbB2

There really does seem to be a logic regarding expansion here so in the end you wouldn't really classify these as trumpet interchanges, would you?
Otherwise, that new realignment of the A9 seems to be leaving a lonely old section in its wake, with a dismal ******* of the former A9 / A4 cloverleaf!

[Viator]

You can see another one of those Dutch specialities under construction near Schipol here - https://goo.gl/maps/p5mKuZJSJbB2

The original example and the one quoted here both show the use of somewhat abstruse zebra-striped signs on the approach to the inside curve of the tight 90-degree bend: https://goo.gl/maps/y46m8fdQUW82

Apparently the official meaning of this sign (BB04) is "shortened exit slip" (Verkorte uitvoegstrook): I wonder how many Dutch drivers, let alone visitors, know that? Also -- even if the general import of the message is similar (you'd better slow down pronto!) -- that wording doesn't quite fit the situation here, does it?

[wibble]

In terms of that right-angled bend - wow!

This one in Cumbernauld must run it close in terms of maximum speed though: https://goo.gl/maps/j3Z5oZCcT542

There is evidence on Google Streetview that someone took it too fast