Lane Graph

Build intelligent road networks in minutes, not days.

LaneGraph eliminates the complexity of lane-based navigation with a visual editor that lets you design, connect, and control traffic flow as easily as drawing paths.

Why LaneGraph?
Stop wrestling with complex navigation systems. LaneGraph gives you production-ready lane-based pathfinding that scales from simple racetracks to sprawling city networks—all without writing a single line of navigation code.

Perfect for:
• Racing Games: Create dynamic racing lines with overtaking lanes and pit lane transitions
• Traffic Simulations: Build realistic city traffic with intersections, signals, and lane changes
• Autonomous AI: Give vehicles intelligent navigation through complex road networks
• City Builders: Design road networks that NPCs can actually navigate properly

Visual Design Tools
Design your entire road network visually in the Unity editor—no code, no guessing. See your changes in real-time.

Path Component: Straight roads, sweeping curves, or complex shapes using Linear, AutoBezier, or manual Bezier control. Perfect for highways, racetracks, and city streets.
Intersection Component: Connect paths with customizable lane-to-lane routing. Define which lanes can turn left, right, or go straight—exactly like real traffic engineers do.
Transition Component: Handle merges, splits, on-ramps, and lane reductions. Your AI can finally navigate highway entrances without breaking a sweat.
Lane State Controller: Add working traffic signals with customizable timing. Green, yellow, red—your lanes respond like real traffic lights.

Runtime Performance That Scales
Built for performance from day one:
• Hierarchical BVH (Bounding Volume Hierarchy) for lightning-fast spatial queries
• A* pathfinding optimized for lane graphs—finds routes through thousands of lanes in nanoseconds
• Unity.Mathematics data types (float3, etc.) for light-weight queries
• Automatic scene optimization converts editor data to lean runtime structures

Query nearby lanes, find paths, detect positions—all without frame drops, even in massive open worlds.

What's Included
Editor Tools (Editor-Only):
• Drag-and-drop lane component creation
• Visual profile manager for configuring lane properties (width, direction, speed limits, tags)
• Real-time connection visualization and snapping
• Traffic signal controller setup
• One-click build system

Runtime Components (Optimized ScriptableObjects):
• Compact lane graph data structures
• Fast spatial query API via LaneGraphManager
• Lane state management with event callbacks
• Pathfinding between any two positions
• Direction and tag-based lane filtering

Documentation & Support:
• Comprehensive user guide with workflow examples
• Complete API reference with code samples
• Demo scenes showcasing different configurations
• Discord community for quick help
• Email support for technical issues