Featured Research

from universities, journals, and other organizations

Lane-swapping helps autonomous vehicles avoid collisions

Date:
January 28, 2013
Source:
Inderscience
Summary:
Autonomous, driverless vehicles look set to hit the streets in the near future and become increasingly common, so UK researchers have investigated algorithms that could help developers include escape maneuvers to allow such vehicles to quickly and safely switch lanes to avoid collisions with other road users.

Autonomous, driverless vehicles look set to hit the streets in the near future and become increasingly common, so UK researchers have investigated algorithms that could help developers include escape manoeuvres to allow such vehicles to quickly and safely switch lanes to avoid collisions with other road users.

Writing in the aptly named International Journal of Vehicle Autonomous Systems, Matthew Best of the Department of Aeronautical and Automotive Engineering at Loughborough University, in Leicestershire, discusses the optimisation of a vehicle's standard brake, acceleration and steering control inputs in the context of avoiding collisions. He has devised a computer simulation that allows all those parameters to be optimised concurrently during a safety manoeuvre and to show how speed reduction and swapping lanes might be carried out by an autonomous vehicle.

The optimal rapid lane-change would inevitably be an aggressive, high "g" manoeuvre that would destabilise the vehicle, and additional computing power would be needed to act quickly to correct under steer and other issues that arise during and after such a vehicle movement. The high-speed lane switch would likely be rarely used in a real-world autonomous drive, but could, in exceptional circumstances, allow driverless or robot vehicles to be safer on roads that which they share with other such vehicles and vehicles with human drivers.

Best points out that simulations at 70 mph (the UK national speed limit on motorways) reveal that braking alone would not lead to a safe outcome in many situations, so a lane swap would almost certainly be needed, assuming there were an empty lane for a vehicle to move into. A lane-change would in the best circumstances move the vehicle to safety in half the distance as braking at that speed.

The researchers concede that at present the limitations of on-board computing power in autonomous vehicles and the need for high-speed data streams measuring real tyre friction coefficients and more means that his algorithm is limited to the simulation at present. However, it paves the way for developing more powerful, safety aware driving systems for such vehicles.


Story Source:

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


Journal Reference:

  1. Matthew C. Best. Optimisation of high-speed crash avoidance in autonomous vehicles. International Journal of Vehicle Autonomous Systems, 2012; 10 (4): 337 DOI: 10.1504/IJVAS.2012.051269

Cite This Page:

Inderscience. "Lane-swapping helps autonomous vehicles avoid collisions." ScienceDaily. ScienceDaily, 28 January 2013. <www.sciencedaily.com/releases/2013/01/130128081530.htm>.
Inderscience. (2013, January 28). Lane-swapping helps autonomous vehicles avoid collisions. ScienceDaily. Retrieved October 1, 2014 from www.sciencedaily.com/releases/2013/01/130128081530.htm
Inderscience. "Lane-swapping helps autonomous vehicles avoid collisions." ScienceDaily. www.sciencedaily.com/releases/2013/01/130128081530.htm (accessed October 1, 2014).

Share This



More Matter & Energy News

Wednesday, October 1, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Japan Looks To Faster Future As Bullet Train Turns 50

Japan Looks To Faster Future As Bullet Train Turns 50

Newsy (Oct. 1, 2014) Japan's bullet train turns 50 Wednesday. Here's a look at how it's changed over half a century — and the changes it's inspired globally. Video provided by Newsy
Powered by NewsLook.com
US Police Put Body Cameras to the Test

US Police Put Body Cameras to the Test

AFP (Oct. 1, 2014) Police body cameras are gradually being rolled out across the US, with interest surging after the fatal police shooting in August of an unarmed black teenager. Duration: 02:18 Video provided by AFP
Powered by NewsLook.com
Raw: Japan Celebrates 'bullet Train' Anniversary

Raw: Japan Celebrates 'bullet Train' Anniversary

AP (Oct. 1, 2014) A ceremony marking 50 years since Japan launched its Shinkansen bullet train was held on Wednesday in Tokyo. The latest model can travel from Tokyo to Osaka, a distance of 319 miles, in two hours and 25 minutes. (Oct. 1) Video provided by AP
Powered by NewsLook.com
Robotic Hair Restoration

Robotic Hair Restoration

Ivanhoe (Oct. 1, 2014) A new robotic procedure is changing the way we transplant hair. The ARTAS robot leaves no linear scarring and provides more natural results. Video provided by Ivanhoe
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