Complex Insight - Understanding our world
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Complex Insight  - Understanding our world
A few things the Symbol Research team are reading.  Complex Insight is curated by Phillip Trotter (www.linkedin.com/in/phillip-trotter) from Symbol Research
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A Ubiquitous Collective Tragedy in Transport

A Ubiquitous Collective Tragedy in Transport | Complex Insight  - Understanding our world | Scoop.it

 

Rafael Prieto Curiel, Humberto González Ramírez, and Steven Bishop

Front. Phys., 16 June 2022

A tragedy of the commons is said to occur when individuals act only in their own interest but, in so doing, create a collective state of a group that is less than optimal due to uncoordinated action. Here, we explore the individual decision-making processes of commuters using various forms of transport within a city, forming a modal share which is then built into a dynamical model using travel time as the key variable. From a randomised start in the distribution of the modal share, assuming that some individuals change their commuting method, favouring lower travel times, we show that a stable modal share is reached corresponding to an equilibrium in the model. Considering the average travel time for all commuters within the city, we show that an optimal result is achieved only if the direct and induced factors and the number of users are equal for all transport modes. For asymmetric factors, the equilibrium reached is always sub-optimal, leading to city travel trajectories being “tragic”, meaning that individuals choose a faster commuting time but create a slower urban mobility as a collective result. Hence, the city evolves, producing longer average commuting times. It is also shown that if a new mode of transport has a small baseline commuting time but has a high induced impact for other users, then introducing it might result in a counter-intuitive result producing more congestion, rather than less.

Read the full article at: www.frontiersin.org


Via Complexity Digest
Phillip Trotter's insight:

Interesting study of transportation models and traffic congestion with a key insight being when being when individuals choose a faster commuting time their decision can often contribute to creating a slower urban mobility as a collective result m- something many of us experience daily.

sheronlucia's curator insight, January 25, 2023 7:44 PM

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Motorcycle runs on water and can travel 310 miles on a single litre

Motorcycle runs on water and can travel 310 miles on a single litre | Complex Insight  - Understanding our world | Scoop.it

Footage shows Sao Paulo-based public officer Ricardo Azevedo filling his 'T Power H20’ motorcycle with clean water and water from the polluted Tiete River before going for a spin. 

 

He said: ‘The advantage of this motorcycle, which works with the hydrogen that comes from the water, is that the result that comes out of the exhaust is water vapour. 


‘This is different from gasoline, which the result is carbon monoxide.’



Via Sepp Hasslberger
Sepp Hasslberger's curator insight, August 3, 2015 9:14 AM

It is only a matter of ingenuity to change our energy world. And of course the inventors have to be able to work without getting barriers thrown in their path all the way... anyway, 310 miles (500 km) per litter of water isn't bad 'gas mileage' at all!

SusanMichelle's curator insight, August 8, 2015 11:11 AM

It is only a matter of ingenuity to change our energy world. And of course the inventors have to be able to work without getting barriers thrown in their path all the way... anyway, 310 miles (500 km) per litter of water isn't bad 'gas mileage' at all!

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Use of Advance Geospatial Data, Tools, Technologies, and Information in Department of Transportation Projects | Blurbs | Main

Use of Advance Geospatial Data, Tools, Technologies, and Information in Department of Transportation Projects | Blurbs | Main | Complex Insight  - Understanding our world | Scoop.it
TRB’s National Cooperative Highway Research Program (NCHRP) Synthesis 446: Use of Advance Geospatial Data, Tools, Technologies, and Information in Department of Transportation Projects that explores the development, documentation, and introduction...
Phillip Trotter's insight:

This Synthesis report identifies the current state of the practice regarding the development, documentation, and introduction of advanced geospatial technologies within the transportation agencies. It is intended to be a detailed, actively linked, and geographically searchable reference source to online publications, as well as a summary of the results of questionnaires
that were distributed to the departments of transportation (DOTs) (96% of state DOTs responded, as did those of Puerto Rico, Washington, DC, and Alberta, Canada) and the service provider community (81% response rate) concerning their current and planned use of advanced geospatial technologies. In addition, there is a discussion of the strengths and weaknesses of a  number of the leading technologies, along with how they are being used and applied today. If you are building services that touch on transportation planning or transportation networks in the United States - this is an essential read.

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High-tech Cargo Airship being built in California

High-tech Cargo Airship being built in California | Complex Insight  - Understanding our world | Scoop.it
The massive blimp-like aircraft flies but just barely, hovering only a dozen feet off a military hangar floor during flight testing south of Los Angeles.
Phillip Trotter's insight:

Having had a long love affair with blimp like aircraft there are a number of intersting developments in using robotic blimp like vehicles for automated delivery.  Worldwide Aeros has demonstrated a new aircraft concept with funding from US govt. the company is now looking to secure follow on funding  for the next round of flight testing. The company says the cargo airship's potential to carry more cargo more efficiently than ever before would provide the U.S. military with an advantage on the battlefield and greater capacity to save more lives during natural disasters. The lighter-than-air vehicle is not a blimp or a zeppelin because it has a rigid structure made out of ultra-light carbon fiber and aluminum underneath its high-tech Mylar skin. Inside, balloons hold the helium that give the vehicle lift. The airship functions like a submarine, releasing air to rise and taking in air to descend and can take off vertically, like a helicopter, then change its buoyancy to become heavier than air for landing and unloading. Worldwide Aeros are following a similar path to the UK based 

Hybrid Air Vehicles Limited who are developing similar solutions for European markets. It will be a matter of time for someone to get the business model and system economics in place to make these viable but as costs of components, robotics control systems combined with navigation technologies its increasingly a matter of when not if. Click on the image or title to learn more.

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Human Mobility: Models and Applications

Recent years have witnessed an explosion of extensive geolocated datasets related to human movement, enabling scientists to quantitatively study individual and collective mobility patterns, and to generate models that can capture and reproduce the spatiotemporal structures and regularities in human trajectories. The study of human mobility is especially important for applications such as estimating migratory flows, traffic forecasting, urban planning, and epidemic modeling. In this survey, we review the approaches developed to reproduce various mobility patterns, with the main focus on recent developments. This review can be used both as an introduction to the fundamental modeling principles of human mobility, and as a collection of technical methods applicable to specific mobility-related problems. The review organizes the subject by differentiating between individual and population mobility and also between short-range and long-range mobility. Throughout the text the description of the theory is intertwined with real-world applications.

 

Human Mobility: Models and Applications
Hugo Barbosa-Filho, Marc Barthelemy, Gourab Ghoshal, Charlotte R. James, Maxime Lenormand, Thomas Louail, Ronaldo Menezes, José J. Ramasco, Filippo Simini, Marcello Tomasini


Via Complexity Digest
Phillip Trotter's insight:
This is a comprehensive review of mobility methods that are  essential for emergent models of disease, transportation, traffic and economics among other applications,. Worth reading.
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A closer look at INRIX, the world's largest traffic intelligence network | ITProPortal.com

A closer look at INRIX, the world's largest traffic intelligence network | ITProPortal.com | Complex Insight  - Understanding our world | Scoop.it
BBC, Ford and Microsoft use its service and it is essential for drivers all across the world. So who exactly is INRIX?
Phillip Trotter's insight:

As part of our research in agent based modeling we have spent some time experimenting with traffic modeling in different platforms such as Mason, Gamma and MatSim as well as our own in house tools.  This research led us to look at data sources and toolsets around the same time that Waze was starting to get tech blog press in the United States. Outside of California - we didnt hear much about Waze - the company we kept running into was  INRIX. As we spoke with researchers and transport planning departments, traffic forecastor and traffic and transport industry experts, INRIX inevitably got mentioned. In fact if you have listened to traffic forecast in Europe - its odds on that you have heard someone using INRIX data.   Yet many people have not heard of the company or the types of products they offer. INRIX  are a real traffic big data success story and as a company they have an awesome singular mission - 'solve traffic worldwide'. If you are undertaking city planning, traffic and transport research you need to know who they are, the products they offer and how they may be able to help you. If your not - then just check out their traffic apps they will help you get from A to B safely and efficiently! Either way to get you started this is a great introductory article on what the company does.

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Toyota to roll out big data traffic service in Japan - ZDNet

Toyota to roll out big data traffic service in Japan - ZDNet | Complex Insight  - Understanding our world | Scoop.it
Toyota to roll out big data traffic service in Japan
ZDNet
Toyota Motor will use live traffic information from its vehicles on the road to offer a big data service targeted at local governments and businesses, and to help drivers during disasters.
Phillip Trotter's insight:

Interesting initiative being led by Toyota. Wonder if we will see other car manufacturers looking to offer similar services going forward...

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