Science Current Events | Science News | Brightsurf.com
 

'Green Routing' Can Cut Car Emissions Without Significantly Slowing Travel Time, Buffalo Study Find

December 15, 2011

BUFFALO, N.Y. -- The path of least emissions may not always be the fastest way to drive somewhere. But according to new research from the University at Buffalo, it's possible for drivers to cut their tailpipe emissions without significantly slowing travel time.

In detailed, computer simulations of traffic in Upstate New York's Buffalo Niagara region, UB researchers Adel Sadek and Liya Guo found that green routing could reduce overall emissions of carbon monoxide by 27 percent for area drivers, while increasing the length of trips by an average of just 11 percent.

In many cases, simple changes yielded great gains.

Funneling cars along surface streets instead of freeways helped to limit fuel consumption, for instance. Intelligently targeting travelers was another strategy that worked: Rerouting just one fifth of drivers -- those who would benefit most from a new path -- reduced regional emissions by about 20 percent.

Sadek, a transportation systems expert, says one reason green routing is appealing is because it's a strategy that consumers and transportation agencies could start using today.

"We're not talking about replacing all vehicles with hybrid cars or transforming to a hydrogen-fuel economy -- that would take time to implement," said Sadek, an associate professor of civil, structural and environmental engineering. "But this idea, green routing, we could implement it now."

In the near future, GPS navigation systems and online maps could play an important role in promoting green routing, Sadek said. Specifically, these systems and programs could use transportation research to give drivers the option to choose an environmentally friendly route instead of the shortest route.

Sadek and Guo, a PhD candidate, presented their research on green routing at the 18th World Congress on Intelligent Transportation Systems in October.

In the UB study on green routing, the researchers tied together two computer models commonly known as "MOVES" and "TRANSIMS."

The Motor Vehicle Emission Simulator (MOVES), created by the Environmental Protection Agency, estimates emissions. The Transportation Analysis and Simulation System (TRANSIMS) simulates traffic in great detail, taking into account information including the location and pattern of signals; the grade of the road; and the trips people take at different times of day.

After incorporating Buffalo-specific data into TRANSIMS, Sadek and Guo ran a number of simulations, rerouting travelers in new ways each time.

After running the models numerous times, the researchers reached a "green-user equilibrium" -- a traffic pattern where all drivers are traveling along optimal routes. With the system in equilibrium, moving a commuter from one path to another would increase a user's overall emissions by creating more congestion or sparking another problem.

The simulations were part of a broader study Sadek is conducting on evaluating the likely environmental benefits of green routing in the region. His project is one of seven that the U.S. Department of Transportation has funded through a Broad Agency Announcement that aims to leverage intelligent transportation systems to reduce the environmental impact of transportation.

The University at Buffalo is a premier research-intensive public university, a flagship institution in the State University of New York system and its largest and most comprehensive campus. UB's more than 28,000 students pursue their academic interests through more than 300 undergraduate, graduate and professional degree programs. Founded in 1846, the University at Buffalo is a member of the Association of American Universities.

The University at Buffalo


Related Emissions Current Events and Emissions News Articles


Better combustion for power generation
In the United States, the use of natural gas for electricity generation continues to grow. The driving forces behind this development?

Arctic Ocean methane does not reach the atmosphere
250 methane flares release the climate gas methane from the seabed and into the Arctic Ocean.

Expert urges voluntary family planning to mitigate climate change
With climate change already close to an irreversible tipping point, urgent action is needed to reduce not only our mean (carbon) footprints but also the "number of feet" - that is, the growing population either already creating large footprints or aspiring to do so, argues a leading physician and environmentalist in The BMJ today.

Spring snow a no-go?
Spring snowpack, relied on by ski resorts and water managers throughout the Western United States, may be more vulnerable to a warming climate in coming decades, according to a new University of Utah study.

Footprints of baby planets in a gas disk
A new analysis of the ALMA data for a young star HL Tauri provides yet more firm evidence of baby planets around the star. Researchers uncovered two gaps in the gas disk around HL Tauri.

OU astrophysicists detect most luminous diffuse gamma-ray emission from Arp 220
A University of Oklahoma team has detected for the first time the most luminous gamma-ray emission from a galaxy--the merging galaxy Arp 220 is the nearest ultraluminous infrared galaxy to Earth, and it reveals the hidden extreme energetic processes in galaxies.

Researchers find higher than expected carbon emissions from inland waterways
Washington State University researchers have found that greenhouse-gas emissions from lakes and inland waterways may be as much as 45 percent greater than previously thought.

Can legumes solve environmental issues?
It's a win-win situation for the environment and the economy when it comes to introducing legumes into agricultural systems, says new research published in Frontiers in Plant Science, carried out by an international team of scientists as part of the European Union project, Legume Futures.

Global data shows inverse relationship, shift in human use of fire
Humans use fire for heating, cooking, managing lands and, more recently, fueling industrial processes. Now, research from the University of Colorado has found that these various means of using fire are inversely related to one another, providing new insight into how people are changing the face of fire.

Natural regeneration of tropical forests helps global climate mitigation and forest restoration
Climate scientists have long recognized the importance of forest conservation and forest regrowth in climate mitigation and carbon sequestration -- capturing carbon dioxide (CO2) from the atmosphere.
More Emissions Current Events and Emissions News Articles

Otoacoustic Emissions: Principles, Procedures, and Protocols (Core Clinical Concepts in Audiology)

Otoacoustic Emissions: Principles, Procedures, and Protocols (Core Clinical Concepts in Audiology)
by Sumitrajit Dhar (Author), James W. Hall III (Author)


Otoacoustic emissions now play an important role in hearing screening and the clinical assessment of children and adults. However, a new wave of evidence is challenging our fundamental understanding regarding OAE sources and mechanisms. Similarly, just as we have settled on methods and protocols for clinical uses of otoacoustic emissions, ongoing research suggests new opportunities for evidence-based clinical applications. In Otoacoustic Emissions: Principles, Procedures, and Protocols, Drs. Dhar and Hall have collected the latest information on OAEs from basic research to clinical applications. The book is concise, but comprehensive, and covers the essentials of the subject from innovative and up-to-date perspectives. The material covered in the book is appropriate for intermediate and...

Gas Turbine Combustion: Alternative Fuels and Emissions, Third Edition

Gas Turbine Combustion: Alternative Fuels and Emissions, Third Edition
by Arthur H. Lefebvre (Author), Dilip R. Ballal (Author)


Reflecting the developments in gas turbine combustion technology that have occurred in the last decade, Gas Turbine Combustion: Alternative Fuels and Emissions, Third Edition provides an up-to-date design manual and research reference on the design, manufacture, and operation of gas turbine combustors in applications ranging from aeronautical to power generation. Essentially self-contained, the book only requires a moderate amount of prior knowledge of physics and chemistry. In response to the fluctuating cost and environmental effects of petroleum fuel, this third edition includes a new chapter on alternative fuels. This chapter presents the physical and chemical properties of conventional (petroleum-based) liquid and gaseous fuels for gas turbines; reviews the properties of alternative...

Reduce Your Carbon Footprint: A Beginners Guide To Reducing Your Greenhouse Gas Emissions (Green Living Series)

Reduce Your Carbon Footprint: A Beginners Guide To Reducing Your Greenhouse Gas Emissions (Green Living Series)
by Ann M Colson (Author)


Make Your Contribution to a Greener Earth – Reduce Your Carbon Footprint Now Have you ever wondered how your life has affected the environment that you live in? Have you heard the term ‘Carbon Footprint’ and been unable to understand the concept in its totality? Are you conscious of the fact that your lifestyle could have led to the depletion of resources that are vital to life on this planet? Well then here is the answer to all your queries. This book aims to educate readers on the various aspects of Carbon Footprint and help find easy and implementable measures to reduce the impact as far as possible.

The objective of this book is to help simplify the scientific jargon and make it easy to understand for everyone so that all readers are able to realize and relate to this...

AUTOMOTIVE EMISSION CONTROLS MANUAL (Haynes Techbooks)

AUTOMOTIVE EMISSION CONTROLS MANUAL (Haynes Techbooks)
by Chilton (Author)


Haynes Techbook covering automotive emission controls.

Continuous Emission Monitoring (Environmental Engineering)

Continuous Emission Monitoring (Environmental Engineering)
by James A Jahnke (Author)


As part of regulatory programs such as the new Clean Air Act, industries that emit pollutants from stationary sources are required to monitor these emissions and to keep them within specified limits. A complete guide to the field of Continuous Emission Monitoring (CEM), this guide addresses all current technologies and practices in the monitoring of pollutants emitted from industrial stacks. Taking the viewpoint of both a purchaser of CEM System and inspector/auditor, this book should enable environmental engineers to assess the operating characteristics of commercially available technologies and to evaluate them for specific applications. Extensive examples will aid readers in understanding and performing calculations or reviewing calculations made by others regarding the conversions of...

Towards Low Carbon Cities in China: Urban Form and Greenhouse Gas Emissions (Routledge Studies in Low Carbon Development)

Towards Low Carbon Cities in China: Urban Form and Greenhouse Gas Emissions (Routledge Studies in Low Carbon Development)
by Sun Sheng Han (Editor), Ray Green (Editor), Mark Y. Wang (Editor)


This book explores the relationship between urban form and greenhouse gas emissions in China, providing new insights for policy, urban planning and management. Drawing on the results of a four-year multidisciplinary research project, the book examines how factors such as urban households’ access to services and jobs, land use mixes and provision of public transport impact on greenhouse gas emissions. The authors analyse data from a wide range of sources including 4677 sample households from four major Chinese cities – Beijing, Shanghai, Wuhan and Xi’an – with diverse locations, urban spatial structures and population sizes. The book explores residents’ attitudes to reducing GHG emissions and advances knowledge relating to three environmental scales – cross-metropolitan,...

Income Inequality, Tariffs and Carbon Emissions

Income Inequality, Tariffs and Carbon Emissions
by Jorge Rojas-Vallejos (Author)


The recent increase in trade liberalization has had substantial distributional consequences, although the direction of this relationship and the mechanism driving it has been open to debate. This monograph analyzes the impact of tariff reductions on the dynamics of wealth and income inequality in a growing economy in which agents accumulate assets such as physical capital and internationally traded bonds. This study comprises a combination of theoretical and empirical analyses, supplemented with numerical simulations. These findings suggest that in the long run a tariff reduction will be expansionary and generally associated with a permanent increase in income inequality, the magnitudes of which depend upon the speed at which the tariff reduction is implemented. For plausible...

Mitchell Emission Control Service & Repair (For Imported Cars & Trucks 1977 Supplement)

Mitchell Emission Control Service & Repair (For Imported Cars & Trucks 1977 Supplement)
by ed. Jerry H. Cole (Author)


Covers Engine identification--Tune-up specifications--Emission control application--Crankcase ventilation--Exhaust emission systems--Fuel evaporation control--Carburetors--Fuel injection--Fuel pump

The Rise and Fall of Carbon Emissions Trading (Energy, Climate and the Environment)

The Rise and Fall of Carbon Emissions Trading (Energy, Climate and the Environment)
by Declan Kuch (Author)


This book presents the results of the first full-scale emissions trading schemes in Australia and internationally, arguing these schemes will not be sufficient to 'civilize markets' and prevent dangerous climate change. Instead, it articulates the ways climate policy needs to confront the collective nature of our predicament.

Haynes Explains Babies: Production and delivery - Oil changes - Identifying leaks - Emission control (Owners' Workshop Manual)

Haynes Explains Babies: Production and delivery - Oil changes - Identifying leaks - Emission control (Owners' Workshop Manual)
by Boris Starling (Author)


Written by bestselling author Boris Starling, Babies is one of the first titles in the brand new Haynes Explains series. A light-hearted and entertaining take on the classic workshop manual, it contains everything you'd expect to see including exploded views, flow charts, fault diagnosis and the odd wiring diagram. It takes the reader through all stages of baby ownership, giving them all the hints and tips needed to keep them running smoothly.

© 2017 BrightSurf.com