RoadRunner Asset Mapping

Consolidated lookup tables for mapping source map format elements to RoadRunner project asset paths. All paths are relative to the project Assets/ folder.

When to Use

• Resolving lane marking subtypes to RoadRunner .rrlms asset paths
• Mapping sign codes (US MUTCD, German StVO, Japanese) to sign asset SVGs
• Looking up barrier/extrusion asset paths for fence, guard rail, jersey barrier, wall
• Finding prop/static object asset paths for placement in RRHD
• Determining region-specific sign paths based on geoReference coordinates
• Assigning lane type enums from source format lane classifications

When NOT to Use

• Building RRHD objects from scratch — use roadrunner-rrhd-authoring
• Performing the full Lanelet2 conversion pipeline — use roadrunner-convert-lanelet2-to-rrhd
• Importing maps into RoadRunner — use roadrunner-import-scene

Key Rules

• All asset paths start with `Assets/` — always prefix when constructing RelativeAssetPath objects.
• Extension matters. .rrlms = lane marking style, .rrcws = crosswalk style, .rrpms = polygon marking style, .svg_rrx = sign. Using wrong extension causes "Asset file is missing" on import.
• Signs use `.svg_rrx` extension (NOT .svg). The .svg paths in XML configs are internal references only.
• Sign naming: descriptive English names with region suffix (e.g., Stop_JP_01.svg_rrx, MaxSpeedLimit_30_DE.svg_rrx). The old Sign_<code>.svg naming is obsolete.
• Region detection from geoReference. Use lat/lon to determine Japan/Germany/US for sign and marking paths.
• Runtime asset discovery is MANDATORY for signs. Asset names vary by version — always verify file exists before assigning.

Source Data

Asset mappings are derived from the official RoadRunner project configuration XMLs:

• DefaultAssets.xml — default materials and markings
• ApolloAssetData.xml — Apollo/Baidu HD Map format
• OpenDriveAssetData.xml — OpenDRIVE format
• HEREAssetData_NA.xml / HEREAssetData_WE.xml — HERE HD Map (NA/EU)
• TomTomAssetData.xml — TomTom HD Map format

These XML files are located in the RoadRunner project's configuration directory (typically <RoadRunner Project>/Configuration/).

Lane Markings

See references/laneMarkings.md for full mapping table.

Key patterns:

• All marking assets are in Assets/Markings/ with .rrlms extension
• Markings are keyed by type (solid/dashed/double) + color (white/yellow)
• Default road center marking: SolidDoubleYellow.rrlms
• Default outer boundary: SolidSingleWhite.rrlms

Signs

See references/signs.md for full mapping table.

CRITICAL: Asset File Extension

• RoadRunner sign assets use `.svg_rrx` extension on disk (NOT .svg)
• The .svg paths in project XML configs are internal references only
• Always use `.svg_rrx` in `RelativeAssetPath` objects — using .svg causes "Could not find asset" errors

MANDATORY: Runtime Asset Discovery

• Sign asset names vary by RoadRunner version and installed asset libraries
• Always verify at runtime that the target asset exists before assigning it
• Use dir(fullfile(projFolder, 'Assets', 'Signs', region, category, '*.svg_rrx')) to discover available signs

Key patterns:

• US signs: Assets/Signs/US/Regulatory Signs/ or Assets/Signs/US/Warning Signs/
• German signs: Assets/Signs/Germany/Regulatory Signs/
• Japan signs: Assets/Signs/Japan/Regulatory Signs/ or Assets/Signs/Japan/Warning Signs/
• Sign geometry uses GeoOrientedBoundingBox (Center + Dimension + GeoOrientation)

Naming convention: Signs use descriptive English names with region suffix:

• Pattern: <Description>_<Region>.svg_rrx (e.g., Stop_JP_01.svg_rrx, MaxSpeedLimit_30_JP.svg_rrx)
• The old Sign_<code>.svg naming is obsolete — files do NOT exist on disk

Region detection from geoReference:

lat = geoRef(1); lon = geoRef(2);
if lat >= 24 && lat <= 46 && lon >= 122 && lon <= 154
    region = "Japan";
elseif lat >= 35 && lat <= 72 && lon >= -10 && lon <= 25
    region = "Germany";
else
    region = "US";
end

Region-specific sign paths (verified R2026a with RoadRunner_Asset_Library):

Signals (Traffic Lights)

Authoring vs Import limitation: You CAN author SignalType objects (add to rrMap.SignalTypes) and Signal instances (add to rrMap.Signals) in MATLAB and write the map to .rrhd — signal data IS written to the file and survives read/write cycles. However, RoadRunner silently ignores signals when importing .rrhd maps — signals will not appear in the RoadRunner scene after import. Show the asset paths and authoring code, but warn the user about this import limitation.

Barriers & Extrusions

See references/barriers.md for full mapping table.

Key patterns:

• All extrusions in Assets/Extrusions/ with .rrext or .rrext.rrmeta extension
• Barriers use roadrunner.hdmap.BarrierType with ExtrusionPath

Props & Static Objects

See references/staticObjects.md for full mapping table.

Key patterns:

• Props in Assets/Props/ subdirectories (Trees, Signals, TrafficControl, etc.)
• Static objects use roadrunner.hdmap.StaticObjectType with AssetPath
• Objects use GeoOrientedBoundingBox for placement

Lane Types

See references/laneTypes.md for full mapping table.

Crosswalks & Curve Markings

Extension rules (commonly confused):

• .rrcws = crosswalk style (only for actual crosswalks)
• .rrlms = lane marking style (stop lines, bike markings, zig-zag)
• .rrpms = polygon marking style (striped regions, chevrons)
• .rrcws_rrx / .rrlms_rrx = region-specific variants (Japan, Germany, etc.)

Base assets (universal):

Japan-specific markings (`.rrlms_rrx` / `.rrcws_rrx`):

Germany-specific markings:

Region selection: Use base (non-regional) assets as default. Use regional variants when the map's geoReference indicates a specific region AND the regional asset exists in the project.

Stencils (Road Surface Markings)

Materials

Default Assets

These are the project-wide defaults (from DefaultAssets.xml):

Usage Pattern (MATLAB)

% Example: resolve marking asset path
function assetPath = resolveMarkingAsset(type, color)
    % type: "solid", "dashed", "solid_solid", etc.
    % color: "white", "yellow" (default: white)
    if nargin < 2, color = "white"; end
    % Use lookup from references/laneMarkings.md
end

All asset paths are prefixed with Assets/ when used in RRHD RelativeAssetPath objects.

Conventions

• All marking assets: Assets/Markings/<Name>.<ext> — extension determines type (.rrlms, .rrcws, .rrpms)
• Regional marking variants: Assets/Markings/<Region>/<Name>_<CC>.<ext>_rrx (e.g., _JP.rrlms_rrx)
• All sign assets: Assets/Signs/<Region>/<Category>/<Description>_<CC>.svg_rrx (NOT .svg)
• All extrusion assets: Assets/Extrusions/<Name>.rrext (or .rrext.rrmeta)
• All prop assets: Assets/Props/<Category>/<Name>.fbx (or .fbx_rrx)
• Use RelativeAssetPath(AssetPath="...") for RRHD construction (Name=Value syntax)
• Default road center: SolidDoubleYellow.rrlms; default outer boundary: SolidSingleWhite.rrlms
• Always verify asset exists at runtime before assigning — paths vary by version and installed libraries

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