Amoeba Design Efficient Transit System

The growth patterns of amoebae as they spread out to connect to food sources bears a striking resemblance to the map of a rail system. Some say the amoeba could inform urban planners and designers.

1 minute read

January 29, 2010, 1:00 PM PST

By Nate Berg


"[A] species of gelatinous amoeba could help urban planners design better road systems to reduce traffic congestion, a new study found.

A team of researchers studied the slime mold species Physarum polycephalum and found that as it grows it connects itself to scattered food crumbs in a design that's nearly identical to Tokyo's rail system."

The growth patterns are formed in the most efficient possible way, maximizing access to nutrients while expending the least amount of energy. The scientists leading this experiment at Hokkaido University in Japan arranged specks of food in the amoebae's dish to match the layout of the train system around Tokyo.

"They even added areas of bright light (which slime mold tends to avoid) to correspond to mountains or other geologic features that the trains would have to steer around", according to this article from MSNBC.

Thanks to David B. Bookless, AICP

Thursday, January 21, 2010 in MSNBC

portrait of professional woman

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching. Mary G., Urban Planner

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching.

Mary G., Urban Planner

Get top-rated, practical training

Close-up of "Apartment for rent" sign in red text on black background in front of blurred building

Trump Administration Could Effectively End Housing Voucher Program

Federal officials are eyeing major cuts to the Section 8 program that helps millions of low-income households pay rent.

April 21, 2025 - Housing Wire

Logo for Planetizen Federal Action Tracker with black and white image of U.S. Capitol with water ripple overlay.

Planetizen Federal Action Tracker

A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.

April 30, 2025 - Diana Ionescu

Close-up on Canadian flag with Canada Parliament building blurred in background.

Canada vs. Kamala: Whose Liberal Housing Platform Comes Out on Top?

As Canada votes for a new Prime Minister, what can America learn from the leading liberal candidate of its neighbor to the north?

April 28, 2025 - Benjamin Schneider

1984 Olympics

LA to Replace Inglewood Light Rail Project With Bus Shuttles

LA Metro says the change is in response to community engagement and that the new design will be ready before the 2028 Olympic Games.

34 minutes ago - Newsweek

Close-up on woman in white and blue striped knee-length dress standing next to mint green cruiser bike resting against low wrought iron fence in front of green lawn.

Paris Voters Approve More Car-Free Streets

Paris Mayor Anne Hidalgo says the city will develop a plan to close 500 streets to car traffic and add new bike and pedestrian infrastructure after a referendum on the proposal passed with 66 percent of the vote.

1 hour ago - domus

Close-up of man in manually operated wheelchair waiting at urban crosswalk.

Making Mobility More Inclusive

A new study highlights the challenges people with disabilities continue to face in navigating urban spaces.

2 hours ago - Greater Good Magazine

Urban Design for Planners 1: Software Tools

This six-course series explores essential urban design concepts using open source software and equips planners with the tools they need to participate fully in the urban design process.

Planning for Universal Design

Learn the tools for implementing Universal Design in planning regulations.