Metromake 0.9.0

Road network editor features

Metromake 0.9.0 is a native desktop editor (C++, OpenGL) for building road networks lane by lane, with terrain and water, and exporting them to driving simulators and 3D engines.

01 — Roads

Roads and cross-sections

Spline roads with any cross-section. Everything on the road is generated from it and rebuilt live while you drag.

10 lane types: driving, parking, bus, bike, shoulder, hatched, median, sidewalk, verge, barrier
Per-lane width, direction and height; 11 marking styles
Curbs, markings, crosswalks, bridges and street lights generated from the cross-section
Drag lane boundaries in the cross-section preview; save custom profiles

Diagram Cross-section in plan and section.

02 — Junctions

Junctions and roundabouts

Automatic junction surfaces for any number of roads.

6 controls: priority, traffic signals, all-way stop, give way, uncontrolled, roundabout
Roundabouts size themselves to their roads, with flared entries, an island and a truck apron
Corner radius, crosswalks, stop lines and turn arrows per junction

Diagram Connecting roads in the OpenDRIVE export.

03 — Signs

Signs with OpenDRIVE codes

27 sign types after the German StVO / Vienna Convention designs, including speed limits 10–130 km/h and their ends, and traffic lights. Each carries its OpenDRIVE code.

Placed beside a road, facing the traffic on that side
Stay attached when roads are split, joined or reversed
Exported to OpenDRIVE as signals, and to glTF/OBJ with their texture

Sign catalogue sheet drawn by Metromake: stop, give way, priority, prohibition, instruction, information and warning signs, traffic light, and speed limits 10 to 130 km/h with their end signs. — Fig. The sign catalogue, drawn by Metromake itself.

Catalogue and OpenDRIVE codes

Stop206

Give way205

Priority road306

End of priority road307

Priority at next junction301

Speed limit (10–130 km/h)274

End of speed limit278

No entry267

No vehicles250

No overtaking276

No stopping283

No parking286

Ahead only209-30

Turn left209-10

Turn right209-20

Keep right222

Roundabout215

One way220-20

Pedestrian crossing350-10

Parking314

Danger101

Pedestrians133-10

Children136-10

Cyclists138-10

Road works123

Traffic signals ahead131

Traffic light1000001

04 — Terrain and water

Terrain and water

Sculpt the ground and add water; roads keep their shape when the ground moves.

Sculpt with brush, area and road-corridor tools
Water: basin fill, brush, ponds and rivers that flow downhill
8 map templates: flat, water, plains, hills, mountains, islands, lakes, river valley
Lower the ground under a road and it becomes a bridge; fill its elevated parts with piers in one click
Tunnels along roads: the terrain never fills them

Wireframe 3D view of roads draped over hills, with bridges across a river valley. — Fig. Roads follow the terrain; the bridges span the river valley.

05 — Views

2D blueprint view and 3D view

Switch between a 3D view and a 2D blueprint view with contour lines and a height cut.

Height cut: hide everything above a level, for example to see under a bridge
All editing tools work in 2D too
Three looks: Rendered (textured, lit, shadowed), Linework (a fast schematic) and Semantic (flat segmentation class colours)
Light and dark themes

Plan view of a road network with terrain contour lines: a signalised crossroads, a roundabout, a river and two bridges, with open ground to the west. — Fig. Plan view with contour lines.

06 — Projects

Projects of several maps

Place maps side by side on a shared plane; roads continue across map edges.

Drag maps into place; edges snap to neighbours
Binding points join roads across map edges, with matching lane profiles
Terrain blends along shared edges

Plan view of one road network split across four maps of a project, with roads crossing the map edges. — Fig. Four maps of one project; roads continue across map edges.

07 — Check

Validation, inspector and Junction Editor

Validation

Errors, warnings and notes about the network, re-checked as you edit; click one to fly to it. A deep check exports the map and reads it back. Details

OpenDRIVE inspector

The map as it exports, road by road and junction by junction, read back with an independent reader.

Junction Editor

One junction explicitly: its approaches, every lane connection, conflict points, who gives way, and the signal program.

08 — Signals

Traffic-signal programs

Stages

Signal groups for vehicles, pedestrians and bicycles; each stage gives every group its state and duration. Cycle and offset.

Pedestrian phase and actuation

Exclusive walk stages; detector-called stages with minimum and maximum green and a gap extension. A timing diagram and a live preview.

Checks

Conflicting greens, missing amber and pedestrian greens too short to cross are flagged before export. Details

09 — Georeference

Coordinates and georeferencing

Coordinate systems

Origin latitude and longitude; a local transverse Mercator, UTM or Web Mercator system; map north, scale and elevation datum. Converts between latitude / longitude, easting / northing and map coordinates.

Move simulation origin

Re-centres the map on a point while everything keeps its place on Earth, so exported coordinates stay small where real-time engines keep their precision.

In the exports

OpenDRIVE geoReference and header offset; the georeference in the perception ground truth. A north arrow, scale bar and cursor coordinates in the editor.

10 — Sensor simulation

Semantics for perception and sensor simulation

Road markings as entities

Centre lines, edge lines, lane separators, stop and give-way lines, crosswalks, arrows with their turns, bicycle symbols and text: each one an object with its kind, colour, pattern, lane and geometry.

Classes and materials

Road, sidewalk, road line, terrain, water, traffic sign and traffic light carry a semantic class (CARLA tags, Cityscapes colours) and sensor properties: albedo, 905 nm reflectivity, retroreflectivity, a radar class and friction.

Ground truth export

glTF markings per kind with an entity id on every triangle, classes in glTF extras, and a .semantics.json with lanes, markings, signs, signal programs and the georeference.

11 — Import and export

Import and export formats

Diagram Formats in and out.

Simulation export

OpenDRIVE 1.6, OpenSCENARIO 1.2

Lanes, lane links, junctions with lane-level connecting roads, roundabouts, elevation, signals and signal programs, road markings, georeference. 16 scenario templates. Details

3D export

glTF 2.0, OBJ, heightmap

.glb / .gltf, .obj, 16-bit heightmap (PNG + RAW .r16), perception ground truth (.semantics.json). Details

Import

OpenStreetMap, OpenDRIVE, heightmaps

.osm, .xodr and 16/8-bit PNG or .r16 heightmaps. Details

12 — Workflow

Workflow and privacy

Start menu

Blueprint previews of your maps and projects.

Recovery

Autosave, crash recovery and undo.

Plain JSON

Map files you can read, diff and generate.

Offline

No account. Activated once per computer, then it works offline. Command-line export for pipelines.

Availability

Early access

Metromake 0.9.0 is in early access for macOS and Windows: download it, activate it with a free early-access key, and tell us what to improve. Team licences and academic use are available on request.

Download early access Request a key