Featured Research

from universities, journals, and other organizations

Automated Tailgating Cuts Pollution

Date:
July 15, 2007
Source:
Inderscience Publishers
Summary:
An automated way of allowing cars to drive much closer to each other in heavy moving traffic, so-called platooning, could cut congestion, save fuel and cut greenhouse gas emissions, according to new research.

An automated way of allowing cars to drive much closer to each other in heavy moving traffic, so-called platooning, could cut congestion, save fuel and cut greenhouse gas emissions, according to research published in Inderscience's International Journal of the Environment and Pollution.

As populations grow and the number of vehicles on the roads in cities and motorways across Europe, North America and the developing world, rises, traditional ways of tackling the problem, such as simply building more roads or improving public transport are becoming less and less effective. "Automated highway systems are one of the many approaches that have been suggested to tackle the problems," says Mitra.

Traffic is a growing problem across the globe with the number of vehicles on the on the roads in Britain alone having risen from 26 million to almost 33 million in the last decade and that number set to rise by 25% over the next ten years. The problem is burgeoning in areas of enormous economic growth, such as China and India where countless new vehicles are pulling out and entering the traffic flow on newly built roads. With all that new traffic, of course, comes more pollution, and the need for ever more innovative approaches to tackling it.

Driving a lot closer than a safe stopping distance from the vehicle in front is not a sensible option. Learner drivers are taught from their first lesson on the road to keep their distance. According to Debojyoti Mitra and Asis Mazumdar in the Department of Mechanical Engineering at Jadavpur University, Kolkata, India, in heavy traffic these safe distances mean more tailgate turbulence and increased drag on individual vehicles, which means lower fuel efficiency.

The researchers investigated the drag on platoons of four vehicles in Jadavpur University's vehicle test wind tunnel.

Cars moving in the same direction separated by a meter or so would reduce drag and so save fuel. Adding sensors and safety controls that allow vehicles to drive at such a small separation is possible. Now, Mitr and Mazumdar explain how car manufacturers and transport policy might work to allow such a platooning system to operate.

"The leading car in the platoon experiences the highest drag as you would expect but no more than if it were driving alone," explains Mitra, "The second car has a much lower drag coefficient than the first car in a two-car platoon. The middle car experiences the lowest drag in a three-car platoon and the third car in the platoon, starting from the front, experiences the least drag in a four-car platoon."

Reduced drag not only means lower average fuel consumption for a platoon, but also reduces the overall road noise heard by drivers and other road users.


Story Source:

The above story is based on materials provided by Inderscience Publishers. Note: Materials may be edited for content and length.


Cite This Page:

Inderscience Publishers. "Automated Tailgating Cuts Pollution." ScienceDaily. ScienceDaily, 15 July 2007. <www.sciencedaily.com/releases/2007/07/070712134955.htm>.
Inderscience Publishers. (2007, July 15). Automated Tailgating Cuts Pollution. ScienceDaily. Retrieved October 21, 2014 from www.sciencedaily.com/releases/2007/07/070712134955.htm
Inderscience Publishers. "Automated Tailgating Cuts Pollution." ScienceDaily. www.sciencedaily.com/releases/2007/07/070712134955.htm (accessed October 21, 2014).

Share This



More Matter & Energy News

Tuesday, October 21, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Graphene Paint Offers Rust-Free Future

Graphene Paint Offers Rust-Free Future

Reuters - Innovations Video Online (Oct. 21, 2014) British scientists have developed a prototype graphene paint that can make coatings which are resistant to liquids, gases, and chemicals. The team says the paint could have a variety of uses, from stopping ships rusting to keeping food fresher for longer. Jim Drury reports. Video provided by Reuters
Powered by NewsLook.com
Gulfstream G500, G600 Unveiling

Gulfstream G500, G600 Unveiling

Flying (Oct. 20, 2014) Watch Gulfstream's public launch of the G500 and G600 at their headquarters in Savannah, Ga., along with a surprise unveiling of the G500, which taxied up under its own power. Video provided by Flying
Powered by NewsLook.com
Japanese Scientists Unveil Floating 3D Projection

Japanese Scientists Unveil Floating 3D Projection

Reuters - Innovations Video Online (Oct. 20, 2014) Scientists in Tokyo have demonstrated what they say is the world's first 3D projection that floats in mid air. A laser that fires a pulse up to a thousand times a second superheats molecules in the air, creating a spark which can be guided to certain points in the air to shape what the human eye perceives as an image. Matthew Stock reports. Video provided by Reuters
Powered by NewsLook.com
Hey, Doc! Sewage, Beer and Food Scraps Can Power Chevrolet’s Bi-Fuel Impala

Hey, Doc! Sewage, Beer and Food Scraps Can Power Chevrolet’s Bi-Fuel Impala

3BL Media (Oct. 20, 2014) Hey, Doc! Sewage, Beer and Food Scraps Can Power Chevrolet’s Bi-fuel Impala Video provided by 3BL
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Space & Time

Matter & Energy

Computers & Math

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins