How do I export Complete Street Rule models to Unity or Unreal Engine?

The rule supports asset replacement via stencil textures and labeled objects, allowing exports to common 3D formats from CityEngine that can be imported into game engines for further customization.

What transportation standards does Complete Street Rule support?

It integrates standards from NACTO, AASHTO, and MUTCD for multimodal street design, ensuring realistic configurations for bike lanes, bus lanes, and other elements based on planning guidelines.

Complete Street Rule vs traditional GIS for street planning?

Unlike traditional GIS focused on 2D analysis, this rule adds rapid 3D procedural modeling and dynamic performance metrics in CityEngine, but it requires more specialized software and setup.

Can I use Complete Street Rule without CityEngine 2025?

The core rule works with older CityEngine versions, but the modular Complete_Lanes architecture is optimized for CityEngine 2025 Street Designer, so some features may be limited in earlier releases.

How accurate are the performance metrics like bicycle stress levels?

Metrics are based on integrated transportation standards and parametric design, providing estimates for scenario comparison, but they may require validation with real-world data for precise analysis.

Open-Awesome

Complete_Street_Rule

Apache-2.0Python2.9.4

A scenario-oriented design tool for ArcGIS CityEngine to quickly create procedurally generated multimodal streets with dynamic performance metrics.

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What is Complete_Street_Rule?

Complete Street Rule is a procedural modeling tool for ArcGIS CityEngine that generates 3D multimodal street designs. It solves the problem of slow, manual street visualization by enabling rapid iteration on configurations like bike lanes, bus lanes, and curbside allocations, integrating transportation standards for realistic planning scenarios.

Target Audience

Urban planners, transportation engineers, and GIS professionals using ArcGIS CityEngine for multimodal street design, scenario analysis, and public outreach through 3D visualizations.

Value Proposition

Developers choose it for its dynamic performance metrics that react to design changes, modular architecture compatible with CityEngine 2025 Street Designer, and support for exporting to game engines like Unity and Unreal for immersive virtual experiences.

Overview

The Complete Street Rule for ArcGIS CityEngine is a scenario oriented design tool intended to enable users to quickly create procedurally generated multimodal streets.

Use Cases

Best For

Rapid prototyping of complete street designs in ArcGIS CityEngine
Comparing before-and-after scenarios for transportation investments
Generating 3D street models for public outreach and virtual experiences
Analyzing multimodal performance metrics like bicycle stress levels
Planning curbside management strategies for micro-mobility and transit
Creating semantic street data for deep learning model training

Not Ideal For

Projects not using ArcGIS CityEngine software
Teams needing only basic 2D street layouts without 3D visualization or performance metrics
Organizations without access to GIS data or transportation planning standards like NACTO

Pros & Cons

Pros

Rapid Iterative Design

Enables quick changes to street configurations such as bike lanes and parking, allowing fast scenario comparison and visualization directly in CityEngine.

Modular Lane Architecture

With CityEngine 2025 Street Designer, individual lane rule files (.cga) can be assigned flexibly, supporting a component-driven workflow for street networks.

Dynamic Performance Analytics

Generates real-time reports on metrics like bicycle stress levels and curbside allocations, creating responsive dashboards that update with design changes.

Export to Game Engines

Supports asset replacement and export to Unity, Unreal Engine, and TwinMotion via labeled objects and stencil textures, facilitating virtual experiences for public outreach.

Cons

Proprietary Software Dependency

Requires ArcGIS CityEngine, a paid and specialized GIS software, which limits accessibility to users without licenses or expertise in that ecosystem.

Steep Learning Curve

Integration with CityEngine 2025 Street Designer and complex parameter sets demand significant knowledge of procedural modeling (CGA scripting) and transportation planning.

Incomplete Documentation

The README includes placeholders like missing GIF demos (e.g., for Street Designer workflow), which could hinder user onboarding and troubleshooting.

Frequently Asked Questions

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