Nodus: An Open-source Solution for Multimodal Freight Network Modeling

Nodus is an open-source traffic network modeling software developed and maintained by Bart Jourquin, hosted on GitHub (https://github.com/jourquin/Nodus). Released on June 7, 2026, it is specifically designed for multimodal and intermodal freight scenarios, supporting complex logistics network analysis and optimization. Built with Java, it features cross-platform compatibility (Windows, macOS, Linux) and a plugin-based architecture for easy expansion.

Global trade growth has led to the prevalence of multimodal transport (combining sea, rail, road, etc.), which brings efficiency but also unprecedented complexity: heterogeneous network topologies (ports, hubs, links with unique attributes), diverse transport mode trade-offs (cost, speed, capacity, carbon emissions), complex transshipment operations (loading/unloading, customs), and uncertain freight demand (seasonality, market changes). These challenges drive the need for specialized modeling tools like Nodus.

Nodus's technical architecture includes:

1. Java-based cross-platform: Runs on any JVM-supported system.
2. Database integration: Supports JDBC connections (via jdbcDrivers directory) for large-scale data handling and enterprise integration.
3. Plugin system: Plugins directory enables custom feature extensions without modifying core code.
4. Rich resources: Demo directory provides example projects, doc directory offers documentation to lower learning curves.
5. Dev tools: devtools and scripts directories support development and deployment efficiency.

Nodus serves various use cases:

• Logistics network planning: Simulate scenarios for distribution center setup, route selection, or market entry.
• Transport mode optimization: Allocate cargo across modes considering cost, time, capacity, and carbon footprint.
• Infrastructure investment evaluation: Predict impacts of new ports/railways on network performance.
• Emergency response: Plan contingency logistics when networks are disrupted (natural disasters, strikes).
• Carbon footprint analysis: Track emissions for green logistics decisions.

Open-source benefits:

• Transparency: Auditable algorithms.
• Community collaboration: Global contributions for improvements.
• Low cost: Free for SMEs and academia.
• Customization: Modify source code for specific needs.

Comparison with commercial tools:

Dimension	Commercial Tools (e.g., PTV Visum, Cube)	Nodus (Open-source)
Cost	High license fees	Free
Customization	Limited by provided features	Full source code access
Support	Professional customer service	Community support
Integration	Dependent on API openness	Fully controllable

Usage steps:

1. Prepare environment: Install compatible Java runtime and necessary database drivers.
2. Learn from examples: Start with demo projects to understand workflows.
3. Read documentation: Refer to doc directory for data formats and modeling concepts.
4. Pilot with small data: Test simple networks before complex scenarios.
5. Join community: Engage in discussions to share experiences and feedback.

Future outlook: As supply chain complexity and carbon neutrality demands grow, Nodus's role will expand—especially if the community continues contributing new algorithms to align with industry needs.