Hello.
This is Aidan.
This video covers junction creation in RoadRunner.
To start with, we're going to use the road plan
tool to generate a road.
Right click to set the start point for your road.
Right click again to draw the rest of it.
You can add additional points to your road
by right clicking anywhere on it.
In this case, let's make a nice, simple curve.
Now, let's draw a second road that
is not quite attached to it.
We're going to use this to demonstrate the slip road tool.
The slip road tool can be used to make
more specialized junctions.
Simply right click on the edge of this lane
and drag to generate a lane that connects over
to here on the main road.
You can also right click and drag from the edge
but not connected to the other road.
This unattached lane can then be manipulated
as per a normal road using the road plan tool.
This will give you more freedom in road position
compared to automatically connected roads.
So it's important to decide which version of this
you want to use.
You can also click and drag from anywhere else on a road
to generate a slip road, like so.
These slip roads are automatically attached
to the lanes they connect to and cannot be wiggled around
and manipulated like the ones that were not generated.
Slip roads that are built by connecting one road to another
are attached to those roads.
You can move them around, but you cannot pull them away from
these roads.
Next, let's talk about the marking point tool.
To start, we're going to go to the stencils folder
and find markings appropriate for the junction we've just
created.
Simply click and drag the marking out into the scene,
and you will see that it snaps to any existing lanes.
Simply let go of it, and it will attach in that place.
You will also find that I'm now toggled into the marking point
tool automatically by dragging that out.
Once a marking is attached in this way, I can click on it
and drag it around within its lane.
Now, I'll add another marking over
here so that this looks like a proper split of lanes.
I can also adjust this marking to a larger size
by simply clicking on it-- then dragging the stencil out
of the stencil folder and over that marking.
Now, let's build a junction with turn lanes.
The first thing we're going to do
is intersect our existing highway road with another road
so that cars have somewhere to turn into and out of.
Next, let's put some space between these two lanes.
We're going to do this with the lane form tool.
So we're going to zoom in, click on this lane,
and then right click and drag--
producing a new road.
Make sure that this road is approximately the same width
as the other two.
Now, we're going to make use of the lane chop tool.
Simply right click to slice a lane into two parts--
each that can be modified separately.
We're going to place one a little bit
higher up and one exactly where these lanes connect
to the highway road.
Now, we're going to activate the lane tool.
Select the area we just chopped out and change its type
to raised median to put a barrier between our two lanes.
With the barrier placed, let's add some turn lanes.
We will use the lane carve tool to divide this lane.
Now, we will clean it up so it looks a little more
like a turn lane.
We're going to go into markings and grab appropriate markings.
We will also add a stencil.
Now, we will use the lane carve tool on the other side
and clean it up.
Finally, let's add one more slip road.
We're going to adjust this one slightly once we've placed it.
By doing this, you can change the shape of your slip roads.
Let's do a bit of final tidying up and check maneuver roads.
Now, to check maneuver roads, we're
going to click on the maneuver tool
and then click on a junction.
As you can see, each lane and how
it connects to any other lane is displayed here.
We can clear out any of these that we
don't need by clicking on them and then pressing the Delete
key.
Here, I think this lane can be a little better placed.
So I'm going to stretch it out slightly and then adjust it
until it looks like a nice organic curve.
And with that, our junction is complete.
Finally, let's make some opposing turn lanes.
Now, we'll use the lane carve tool to make our turn lanes.
Just like before, right click the lane
and drag to an adjacent lane.
Now, we'll make sure these lanes face in the proper directions
using the lane tool.
This central section should be set
to travel direction undirected and type restricted
so that no traffic can pass through it.
This lane should be set from forward to backward.
Now, we'll apply stencils.
We will finish off this section by applying
some residential roads that can connect into our lanes.
And there's this finished junction.
The maneuver roads might need a little bit of cleanup.
So let's check them now.
Ah, yes.
There's several maneuver roads that shouldn't be there.
It looks like the problem is that our lanes are too close
and are overlapping-- forming these two junctions.
We can move the lanes to fix this.
These junctions are now separated,
but they still have some excess maneuver roads.
Let's trim those now.
Here's another way to build another variation
of this type of junction.
We have the road first this time.
Now, we'll go in a little bit.
Now, we will use the lane form tool
to add an extra lane to this road.
As usual, keep this lane about the same width
as your other lanes.
Use the lane marking tool to adjust
this marking so that cars have a spot to get into this lane.
Just like before, we will use the lane carve tool.
In some markings, and we will adjust the lane markings.
Let's wrap things up by going to stencils for some arrow
markings.
And finally, we will check out the maneuver roads.
Everything looks in order here.
To finish up this scene, you can click on open drive export
preview tool to export it for use
with an open drive or other software,
including RoadRunner's own scenario editor.
You'll notice that several warnings popped up
when I hit Export.
Optimally, your scene should contain
no errors and no warnings, but we'll
ignore that within the scope of this tutorial.