LEGION crowd simulation heatmap plotting pedestrian flow density inside a terminal facility, with green and blue tracks representing normal flow and yellow-red hotspots identifying congested zones.

LEGION

Starting at

$16,330.00 USD

Pedestrian simulation and crowd modeling software 

Purchase LEGION

BENEFITS

Optimize pedestrian flow

Model and simulate pedestrian movement to test designs, improve safety, and optimize operations before implementation.
LEGION crowd simulation software screen displaying a detailed CAD layout of a transit station with color-coded dot particles modeling pedestrian flow, travel paths, and potential bottlenecks.

  • Design and test pedestrian scenarios

    Build accurate digital models of populated spaces and evaluate multiple design and operational scenarios before implementation. 

  • Improve crowd safety and evacuation planning

    Simulate crowd movement and evacuation strategies to identify risks, reduce bottlenecks, and enhance safety outcomes. 

  • Communicate crowd flow insights clearly

    Visualize pedestrian simulations and analysis outputs to support decisions and align stakeholders across complex projects. 

PRICING OPTIONS

Exclusive pricing options

LEGION

A complete pedestrian modeling, simulation, and analysis solution.

Starting at

$16,330.00 USD

12-month Virtuoso subscription

Includes 1 license and 2 Keys for training or services

  • Build accurate pedestrian models using design, demand, and operational data
  • Predict and improve pedestrian flow and safety across populated environments
  • Simulate movement scenarios to test designs, visualize flows, and support data‑driven decisions
  • Collaborate efficiently with shared libraries, workflows, and open data to reduce rework
  • Test complex “what‑if” scenarios using automated routing, reusable objects, and CAD integration
  • Analyze and visualize simulation results to clearly communicate performance outcomes

More details

Pedestrian simulation 

  • Create precise models of how a space will be used 
  • Import architectural drawings (CAD) to define physical spaces available for pedestrian use 
  • Specify the anticipated pedestrian demand for the space 
  • Designate areas where interim activities, such as queuing or waiting, occur 
  • Link operational data to simulate real-world usage scenarios 
  • Plan routes and automatically lay out navigation maps 
  • Populate the model based on activities and characteristics, such as size, speed, and personal preferences. 

Pedestrian behavior modeling 

  • Uses the concept of least effort, or least cost, as the basis of pedestrian logic 
  • Dissatisfaction is caused by physical and psychological factors that lower journey quality. Factors that contribute to dissatisfaction: 
    • Inconvenience – desire line divergence stress 
    • Discomfort – personal space compression stress 
    • Frustration – preferred speed relinquishment stress 

Dynamic pedestrian movement 

  • Model space is continuous, rather than structured, based on a pixel grid 
  • Select any vector when optimizing step choice to satisfy individual preferences and objectives in the context of changing physical constraints 
  • This approach follows a two-stage process: 
    • Macro-navigation 
      • The selection of an entity’s desired direction to its next target, from its current position 
      • Represented by a sequence of intermediate, focal targets that trace the shortest path from an entity’s location to the place where it leaves the model (or reaches its final destination) 
    • Micro-navigation 
      • Uses advanced, proprietary, artificial intelligence algorithms to apply micro-navigation to its entities, within a simulation 
      • Algorithms enable entities to exhibit realistic pedestrian movement 
      • Entities have an area of perception that adjusts dynamically, based on instantaneous information and accumulated memories 
      • Entities assess information to decide their best immediate step 
      • Micro-navigation algorithm takes several important considerations into account, including: 
        • Early detection and avoidance of physical obstacles 
        • Accommodation of personal space, preferred speed and more 
        • Manoeuvring to avoid collisions 
        • Learning from accumulated memories 
        • The ability to adjust individual preferences and attributes

Pedestrian behavior & crowd characteristics 

  • Social, physical, and behavioral characteristics are assigned probabilistically from established profiles 
  • Social characteristics include gender, age, culture and pedestrian type, all of which shape typical movement preferences 
  • Physical characteristics determine body sizes 
  • Behavioral characteristics include memory, adaptability, and preferences for unimpeded walking speeds, personal space, and acceleration 

Pedestrian flow analysis & simulation results 

  • Numerical and graphical outputs derived from a model and user-defined areas, interrogated to provide user-defined combinations of these, based on user-defined thresholds 
  • Measure and quantify the performance of a site with respect to experience, circulation, and safety 
  • Key metrics include counts, flows, distances, densities, journey times, speeds, and levels of service 
  • Heat maps provide intuitive overviews to help identify areas requiring deeper analyses, including line graphs, histograms, stacked histograms, cumulative data, or even raw data, which can then be used for statistical analyses 

Processor:
  • AMD Ryzen Threadripper or Intel Core i9, with performance-core clock speeds of at least 3.5 GHz
Memory:
  • 64 GB of high-speed RAM
Storage:
  • Separate SSDs for the operating system and data, with at least 50 GB of free space on the data SSD
Graphics card:
  • NVIDIA or AMD graphics card with at least 8 GB of dedicated memory
Operating system:
  • Windows 10 or later
Monitor:
  • Full HD display
Microsoft Excel:
  • Current 64-bit version of Microsoft Excel

USER STORIES

Real stories. Real results.

Bank-Monument station receives 45% capacity boost

LEGION helped assess and improve London Underground’s most complex subterranean station.

An architectural rendering of the new entrance to Bank Station, showing pedestrians entering through the ticket gates.

SYSTRA optimizes people movement in a railway station expansion

The design team used pedestrian simulations in LEGION to inform and optimize design of Gare du Nord expansion.

A pedestrian density map created in LEGION by SYSTRA, simulating passenger movement and congestion at a specific time for the Gare du Nord modernization project in Paris.

Shaping safer, people‑first mobility in Madrid

Colin Buchanan used LEGION to simulate pedestrian movement, helping Madrid test designs and improve safety, access, and urban mobility.

An aerial view of the major urban redevelopment and underground infrastructure construction along Paseo de la Castellana in downtown Madrid, Spain.

FAQS

Find answers

LEGION is pedestrian modeling and simulation software used to analyze how people move through populated spaces, helping teams test designs and operations before implementation.

LEGION is a package of two applications: LEGION Model Builder and LEGION Simulator.

LEGION Model Builder is a simulation and modeling software that enables you to run and evaluate virtually any place where people converge, such as railway stations, sports stadiums, airports, office complexes, theaters, piazzas, and transport hubs. As an interoperable software, you can easily import building geometry from a large range of CAD/IFC file types. Simply build and audit models with automated routing, increased intelligence, and simplified objects. Easily reuse your data when you define and share objects across projects and teams, and link operational data to the model. Quickly prepare and import your model with data template that is flexible and simple to audit. An integrated CAD drawing feature also allows you to quickly modify designs. Reduce your auditing time and make quick updates when you consume data such as destination data and entity types.

LEGION Simulator enables you to simulate people’s movement to explore various design alternatives. Its data-rich analysis output supports infrastructure assets that range from metro stations and airports to stadiums and shopping malls. With LEGION Simulator, you can accurately test designs and plans to enhance footfall, wayfinding, crowd management, safety, and security strategies.

Yes. LEGION allows users to simulate evacuation strategies and assess safety performance under different conditions.

Yes. Users can import CAD drawings to build accurate models of real-world environments.

Pedestrian simulation software lets you model and visualize how people move through places like stations, venues, streets, and buildings. It helps teams try out different design or operational “what‑if” scenarios, spot bottlenecks and safety risks, compare options, and show the impact of changes before anything is built or implemented.

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