Management & Operations

Are big-city transportation systems too complex for human minds?

Posted on February 23, 2016

London Tube map. Transport for London
London Tube map. Transport for London

Many of us know the feeling of standing in front of a subway map in a strange city, baffled by the multi-coloured web staring back at us and seemingly unable to plot a route from point A to point B.

According to a new study published in the journal Science Advances, navigating routes through a complex urban transport system can often exceed the human brain's cognitive limits.

After analysing the world’s 15 largest metropolitan transport networks, the researchers at Oxford University estimated that the information limit for planning a trip is around 8 bits. (A ‘bit’ is a binary digit — the most basic unit of information.)

Additionally, similar to the "Dunbar number," which estimates a limit to the size of an individual’s friendship circle, this cognitive limit for transportation suggests that maps should not consist of more than 250 connection points to be easily readable.

Using journeys with exactly two connections as their basis (that is, visiting four stations in total), the researchers found that navigating transport networks in major cities — including London — can come perilously close to exceeding humans’ cognitive powers.

And when further interchanges or other modes of transport — such as buses or trams — are added to the mix, the complexity of networks can rise well above the 8-bit threshold. The researchers demonstrated this using the multimodal transportation networks from New York City, Tokyo, and Paris.

"Human cognitive capacity is limited, and cities and their transportation networks have grown to the point where they have reached a level of complexity that is beyond human processing capability to navigate around them," said Mason Porter, Professor of Nonlinear and Complex Systems in the Mathematical Institute at the University of Oxford. "In particular, the search for a simplest path becomes inefficient when multiple modes of transport are involved and when a transportation system has too many interconnections."

He adds that, in many cases, the maps currently in use need to be rethought and redesigned. Journey-planner apps of course help, but the maps themselves need to be redesigned.

The research – a collaboration between the University of Oxford, Institut de Physique Théorique at CEA-Saclay, and Centre d’Analyse et de Mathématique Sociales at EHESS Paris – is published in the journal Science Advances.

View comments or post a comment on this story. (1 Comment)

More News

London most expensive city to commute to work via public transit

New York City comes in it at No. 4 at a cost of approximately $120 per month, with Chicago and San Francisco at $102.10 and $86.10 per month, respectively.

Late U2 concert leaves transit officials upset over costs

The Wednesday night concert, which didn't wrap up until 11 p.m., forced the Valley Transportation Authority to add 11 extra after-hours trains to accommodate concertgoers.

Video shows Metro Transit officer asking about immigration status

Metro Transit Police Chief Harrington said in a statement that it's not his agency's practice to inquire about immigration status and has asked for an internal investigation into the encounter.

UITP Summit offers glimpse at the future of mobility

The theme of the biennial Global Public Transport Summit was “Lead the TRANSITion” and served to highlight the need for public transport to take the lead faced with the numerous changes and challenges

Stertil-Koni commemorates 7,500th vehicle lift at U.S. facility

Coming off the production line to achieve this historic milestone for the company was the ebright ST 1085 cabled mobile column lift — which is capable of lifting 18,500 lbs. per column or 74,000 lbs. for a set of four.

See More News

Post a Comment

Post Comment

Comments (1)

More From The World's Largest Fleet Publisher

Automotive Fleet

The Car and truck fleet and leasing management magazine

Business Fleet

managing 10-50 company vehicles

Fleet Financials

Executive vehicle management

Government Fleet

managing public sector vehicles & equipment

TruckingInfo.com

THE COMMERCIAL TRUCK INDUSTRY’S MOST IN-DEPTH INFORMATION SOURCE

Work Truck Magazine

The number 1 resource for vocational truck fleets

Schoolbus Fleet

Serving school transportation professionals in the U.S. and Canada

LCT Magazine

Global Resource For Limousine and Bus Transportation

Please sign in or register to .    Close