How do I simulate a traffic jam?

Open this page and use the live Reaction-Diffusion tool below — set your inputs and the simulation runs instantly in your browser using real numerics. No install, no account needed.

Yes. The simulation runs free in your browser. A one-time unlock or a Pro plan adds advanced parameters, saved presets, data import, and clean exports.

Can I use my own numbers?

Absolutely — every input is adjustable, and with data import you can drive a traffic jam from your own measurements.

Use case · powered by Reaction-Diffusion

Reaction-Diffusion for a traffic jam

Simulate a traffic jam live in your browser. This runs the real Reaction-Diffusion solver — adjust the inputs, watch it respond instantly, and export the result. No install, no account.

For:Students Researchers Educators Engineers Hobbyists & Makers K-12 Students First Responders

Reaction-Diffusion (Gray-Scott)Live

Turing patterns from chemistry

Controls

Presets

Feed rate F

Kill rate k

Speed1×

Two chemicals diffuse and react by the Gray-Scott equations. Different feed and kill rates spontaneously form spots, stripes, and mazes — the mechanism Alan Turing proposed for animal coat patterns.

▶ Run in Python

Data Inspector

Feed F0.0545

Kill k0.0620

Steps0

Governing equation

\frac{\partial u}{\partial t} = D_{u} \nabla^{2} u - u v^{2} + F (1 - u), \frac{\partial v}{\partial t} = D_{v} \nabla^{2} v + u v^{2} - (F + k) v (F = 0.0545, k = 0.0620)

Reading this result: High feed (F=0.0545): abundant substrate lets spots grow and merge into branching maze and coral networks.

Runs locally in your browser — free forever. Scale to the cloud when reality gets heavy.

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About this simulation

The full Reaction-Diffusion tool models a traffic jam with the same numerics engineers and scientists use — running entirely client-side. Change any parameter and the result updates in real time, so you can build intuition, check a design, or teach the concept without spreadsheets or installs.

More you can do with Reaction-Diffusion

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Other ways to simulate a traffic jam

Boids Flocking for a traffic jam Traffic Flow for a traffic jam Forest Fire Model for a traffic jam Abelian Sandpile for a traffic jam Schelling Segregation for a traffic jam Langton's Ant for a traffic jam

Frequently asked questions

How do I simulate a traffic jam?: Open this page and use the live Reaction-Diffusion tool below — set your inputs and the simulation runs instantly in your browser using real numerics. No install, no account needed.
Is it free?: Yes. The simulation runs free in your browser. A one-time unlock or a Pro plan adds advanced parameters, saved presets, data import, and clean exports.
Can I use my own numbers?: Absolutely — every input is adjustable, and with data import you can drive a traffic jam from your own measurements.