Trumpety trumpets

[ChrisH]

The double trumpet is quite a common interchange in many countries, especially when one road is a tolled motorway as it only requires one set of toll booths and two bridges to give freeflow interchange between the two roads.

I think this complex in Portugal wins the contest of the most trumpets in one area: four and a half, although one isn't yet in use.

Can anyone find more trumpets in one junction complex?

[M4Simon]

The double trumpet is quite a common interchange in many countries, especially when one road is a tolled motorway as it only requires one set of toll booths and two bridges to give freeflow interchange between the two roads.

I think this complex in Portugal wins the contest of the most trumpets in one area: four and a half, although one isn't yet in use.

Can anyone find more trumpets in one junction complex?

That makes my head spin. What's it going to look like when complete?

Simon

[Truvelo]

It looks like the typical sort of mess when new roads have been added piecemeal over the years.

[M4 Cardiff]

Interesting story behind why the A26 was never finished https://translate.google.com/translate? ... toestrada)

[jervi]

I had a look at the junction on google earth only a week ago when measuring the E 01 (I was really bored).
I did spend a while trying to work out what all the movements were, and why a seemingly low traffic IP was getting a whole new motorway, but I guess that's just how they do thing on the continent.

[Owain]

The double trumpet is quite a common interchange in many countries, especially when one road is a tolled motorway as it only requires one set of toll booths and two bridges to give freeflow interchange between the two roads.[...]

Can anyone find more trumpets in one junction complex?

This is a great idea for a thread! Now if only I could think of a country where ....

[Owain]

[Owain]

(I remember this one being built!)

[ChrisH]

A4-exSS47 Padova.png

A14-SS3bis Cesena.png

SS131-SS293 Sardegna.png
(I remember this one being built!)

More trumpets than the Royal Philharmonic. I love it!

[ChrisH]

Interesting story behind why the A26 was never finished https://translate.google.com/translate? ... toestrada)

If even the Portuguese think the traffic volumes are too low for a motorway then it really will be deserted. Some of their motorway sections have 10000 vehicles per day and as a result are very nice to drive on!

[Truvelo]

We came close to getting one in 1995 if you count the one at the top of the map as a trumpet bolted onto an existing one.

[M4 Cardiff]

We came close to getting one in 1995 if you count the one at the top of the map as a trumpet bolted onto an existing one.

How and why did that junction end up with such a strange layout? I assume there was some kind of constraint preventing construction of a more regular design. Same really for Bullington Cross.

[Truvelo]

How and why did that junction end up with such a strange layout? I assume there was some kind of constraint preventing construction of a more regular design. Same really for Bullington Cross.

The northwest side of the junction is hilly which would require a very deep cutting and there's also a group of houses. However, it's one junction where the obvious solution is to build a trumpet at the other end of the slip road like those on toll roads.

[ChrisH]

Here is a late entry by Turkey, around the new Istanbul airport.

Trumpets

[jackal]

Here is a late entry by Turkey, around the new Istanbul airport.

Trumpets

How did they think that was cost effective??

[A303Chris]

How and why did that junction end up with such a strange layout? I assume there was some kind of constraint preventing construction of a more regular design. Same really for Bullington Cross.

There's only one none free flow movement through isn't there A303 East to A36 south
The northwest side of the junction is hilly which would require a very deep cutting and there's also a group of houses. However, it's one junction where the obvious solution is to build a trumpet at the other end of the slip road like those on toll roads.

[booshank]

Here is a late entry by Turkey, around the new Istanbul airport.

Trumpets

How did they think that was cost effective??

Seems a reasonable way to connect a one way loop around the terminal to two parallel roads.

[jackal]

But look at the redundancy in the surrounding network.

[mikehindsonevans]

We came close to getting one in 1995 if you count the one at the top of the map as a trumpet bolted onto an existing one.

How and why did that junction end up with such a strange layout? I assume there was some kind of constraint preventing construction of a more regular design. Same really for Bullington Cross.

Bullington Cross - and the Sutton Scotney bypass - was in my area in 1981. The main over bridge, carrying the A303 east-west above the North-South A34, was developed offline to the west, to align better with the new Sutton Scotney (and Worthy Down) bypass which ran further west than the original alignment.

I do agree the layout is suboptimal given current traffic on the "M34". Hurtling northbound on the A34, many drivers instinctively move right as we enter the "dip" under the A303. The on-ramp northbound really should be a crawler lane to the top of the hill - and this is a piece of the A34 that only celebrates its 40th birthday in the next year or so.

[Vierwielen]

The title of this discussion gave me a fright! Initially I thought that it might have something to do with the US election.