New Taxiway Junction System
Here's one for you airport builders.
Recently
Vulcan & I have been looking at an improved system for airport taxiway junctions.
The existing
Vulcan turn out junctions available are a little limited as they only allow a two way switch much like a rail junction. Airport Taxiway junctions are a lot more complex and we needed to come up with a way to make them a bit more prototypical & functional.
There are a number of different types that are listed below. The following is a tutorial of sorts, that will both help you understand the concept and understand how to place them effectively. I've used the tee junction for this example.
Place the junction from the object placement tool.
Once the junction is placed, the ? will allow you to see a help page with some screen shots and tips. These are great as a learning tool for the first few times or if you get lost along the way.
Connect the taxiway splines to the outer connect points.
Next, add invisible in driver track splines (blue, green, purple etc by
Vulcan) between the inner connect points. You will have to add at least one node between the junction connect points. We've found it best to run the straight through runs first (highlighted in pink). This is also the best strategy for the more complex junctions. It is also best to add the 3 nodes as shown below. The left & right node will become junctions. Unfortunately you can't see the track you've just placed because it sits below the top surface of the junction, but have faith.
Next, add the curved sections. Add a short straight from the branch node. This node will be the other junction. Then add the two curved sections making sure the mid length node is included and the switches place correctly. The mid span nodes help the track have the right shape. This is very important when using the more complex junctions.
At this stage I like to change the switches for "Lever Invisible" switches. If you have them set as the default placement, you won't have to.
If you delete the junction asset, this is what it should look like. You can delete, then undo if you want to be sure of what you've placed which is recommended the first few times at the very least.
When you're done it should look a bit like this.
In Driver you can <ctl><H> to hide the switches (this doesn't happen with the existing junctions) & at night you'll see the lights along the yellow lines like the taxiway track splines. The result is well worth a little bit of pain to build the junction. Visually & functionally the new system is a really good result.
Hopefully this helps some of you guys building your airports.
There are standard 90 tees & crosses in 25m & 40m wide along with 40m wide angled tees for the high speed runway exits on the bigger city airports. Try them & post some comments & screenshots on this forum. We'd love to know what you think of them & whether there are improvements we could make. Below are to set that are now available on DLS under Vulcan's username.
Airport Taxiway Cross 25 metre radius
Airport Taxiway Cross 40 metre radius
Airport Taxiway Diagonal Cross 30 degrees 40 metre radius
Airport Taxiway Tee 25 metre radius
Airport Taxiway Tee 40 metre radius
Airport Taxiway Turn Left 30 degrees 40 metre radius
Airport Taxiway Turn Right 30 degrees 40 metre radius
Many thanks to Vulcan for deciphering my ramblings to produce these excellent models. If you have specific junctions for your airports that don't fall into any of these assets (as I do), either leave a message on this thread or contact Ian directly with a PM. I'm sure he's got nothing better to do. :hehe:
Now. Back to my aircraft skins....