Community guidelines for mapping

 Simple Tunnel

 

• A simple tunnel is made of - a single "two way" segment / a pair of "one way" segments in opposite directions.
• The tunnel has NO underground forks / ramps / exits / Other types of branch segments.
• The tunnel has only one way in and one way out.

 

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Editing in WME

1. Set segments as "Tunnel" - Check the tunnel attribute.
2. Set elevation to [ - 4 ] - Aids in visualization of tunnel segments when using the highlight script.
3. Edit + verify segment geometry - High accuracy of the geometry is crucial for measurements and beacons placement.
4. Adjust entrance and exit nodes to be placed as close as possible to the tunnel portals.

Entrance and exits on tunnel portals

 Complex Tunnel

 

• A complex tunnel is made of multiple sections and more than two main segments.
• The tunnel has one or more underground forks / ramps / exits / Other types of branch segments.
• The tunnel has more than one entry and/or exit points.

 

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Editing in WME

1. Set all underground segments as "Tunnel" - Check the tunnel attribute.
2. Adjust all entrance and exit nodes to be placed as close as possible to the tunnel portals.

Geometry

For complex tunnels we will always have a schematic file provided by the partner.

The schematic file will be in PDF format, and contains the map of all tunnel sections.

Using the "Image Overlay" script you can accurately place the schematic map inside the WME, and adjust each segment geometry to match the plans.

1. Make sure the image is resized and positioned accurately over the map, use over ground segments as reference.
2. Adjust the geometry nodes of each segment to align with the schematics.
3. Make sure to split entrance and exit segments on the portals, an over-ground segment can't continue into the tunnel.
4. Elevation should be set per tube (continue to read below).

 

 

Shared tubes and dividing walls

Entrance / Exit ramps that connect to the main tube(s) are often made of two distinct sections:

1. The part of the ramp that is just a lane inside the main tube - "Shared Tube".
2. The part of the ramp that has a physical wall separating it from the main tube it branches from / into.

How to edit: Y-Nodes

Drag / Adjust the "Y-Node" (the point where the ramp starts or ends) and place it right at the point where cars can switch lanes legally.

• Exit ramp - Y-Node at the point where it's no longer possible to switch lanes.
• Entrance ramp - Y-Node at the first point where switching lanes is possible.

Example of exit ramp Y-Node placement: Permalink

 

How to edit: Dividing wall

As long as the ramp is just a lane in the main tube, it benefits from the set of beacons that will be installed on the main tube wall.

But once a physical wall separates the ramp from the main tube, there will be a new set of beacons dedicated for the ramp.

Split the ramp segment as close as possible to the point where the physical wall starts (or stops if it's an entrance ramp).

Example of where to split the segment for a wall split: Permalink

 

How to edit: Elevation

Elevation is used together with the "Highlight" script only for visualization purposes (Colors the segments), as it makes it easy to see which segments are part of a shared tube and which segments require their own set of beacons.

1. Main tube should be set to elevation [ -4 ], this includes exit or entrance ramp segments that are not separated by a physical wall.
2. Continuous segments of ramps with a split wall should be set to a different elevation than the main tube (see above example of ramp - Red segments are the shared tube, Blue segment is where the physical wall exists).
3. Other segments in close proximity should be set to different elevations based on map editors best judgment, so it's clear and easy to identify shared tubes and divider walls.

 

[-1 green] Underground entrance ramp + secondary tunnel tube that share the same set of beacons once they meet.

[-2 blue] Secondary tunnel tube + part of an exit ramp that starts from [-3 purple], share the same tube once the divider wall stops.

[-3 purple] Serves as an entrance ramp into [-2 blue] and [-4 red].

[-4 red main tube] The entrance ramp that starts as [-3 purple] is split where the divider wall stops, and drivers benefit from the main tube set of beacons.

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