Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Heavy truckers out of control

02.09.2008
Research carried out in Sweden suggests that there are three critical manoeuvres that lead to loss of control of heavy trucks and subsequent accidents.

Writing in the International Journal of Vehicle Safety, the researchers explain that negotiating a bend is the main cause of loss of control, closely followed by avoidance manoeuvres, and road-edge recovery.

Sogol Kharrazi and Robert Thomson of the Department of Applied Mechanics, at Chalmers University of Technology, Gothenburg, Sweden have analysed data from the Large Truck Crash Causation Study database and looked at what caused the drivers to lose control of their vehicles. They considered accident type, what kind of manoeuvres preceded the accident, the class of vehicles involved in the accident, driving conditions and road characteristics.

By identifying common critical manoeuvres the team hopes, not only to educate the trucking industry but also to inform those involved in truck design and manufacture and road building about the factors that lead to the most accidents involving heavy trucks. Their study did not take into consideration accidents involving trucks in which the truck was not the cause or where driver fatigue, inattention or vehicle failure was involved.

Overall, they explain, loss of control was associated with almost a fifth of trucks involved in accidents. Turnover was a more common type of loss of control than yaw instability, skidding or jack-knifing, with more than half of trucks that underwent loss of control rolling whereas less than a third involved simply severe deviation from the intended path due to under-steer, over-steer, or trailer swing. About 14% experienced both yaw instability and turnover. Most (84%) of loss of control accidents involved a single vehicle.

Negotiating a bend in the road was the main critical manoeuvre leading to loss of control, with almost two-thirds of incidents taking place on a curve, the researchers say. Avoidance manoeuvres accounted for more than one in ten of loss of control accidents and similar numbers where the driver was attempting to regain position on the road after veering off into a verge.

Intriguingly, wet conditions were not a common factor in loss of control accidents. Dry road conditions were present for three quarters of all trucks which underwent loss of control, the researchers report. However, wet road conditions were associated with more than half of trucks that jack-knifed or otherwise underwent yaw instability.

Turning at intersection, lane change, heavy braking on straight roads, collisions with pedestrians or animals, or speeding on low-friction straight roads also accounted for a small percentage of loss of control accidents, the researchers add. For the heavy braking accidents, trucks involved often had no Antilock Braking System installed.

Albert Ang | alfa
Further information:
http://www.inderscience.com

More articles from Transportation and Logistics:

nachricht Experiments show that a few self-driving cars can dramatically improve traffic flow
10.05.2017 | University of Illinois College of Engineering

nachricht Tool helps cities to plan electric bus routes, and calculate the benefits
09.01.2017 | International Institute for Applied Systems Analysis (IIASA)

All articles from Transportation and Logistics >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Can the immune system be boosted against Staphylococcus aureus by delivery of messenger RNA?

Staphylococcus aureus is a feared pathogen (MRSA, multi-resistant S. aureus) due to frequent resistances against many antibiotics, especially in hospital infections. Researchers at the Paul-Ehrlich-Institut have identified immunological processes that prevent a successful immune response directed against the pathogenic agent. The delivery of bacterial proteins with RNA adjuvant or messenger RNA (mRNA) into immune cells allows the re-direction of the immune response towards an active defense against S. aureus. This could be of significant importance for the development of an effective vaccine. PLOS Pathogens has published these research results online on 25 May 2017.

Staphylococcus aureus (S. aureus) is a bacterium that colonizes by far more than half of the skin and the mucosa of adults, usually without causing infections....

Im Focus: A quantum walk of photons

Physicists from the University of Würzburg are capable of generating identical looking single light particles at the push of a button. Two new studies now demonstrate the potential this method holds.

The quantum computer has fuelled the imagination of scientists for decades: It is based on fundamentally different phenomena than a conventional computer....

Im Focus: Turmoil in sluggish electrons’ existence

An international team of physicists has monitored the scattering behaviour of electrons in a non-conducting material in real-time. Their insights could be beneficial for radiotherapy.

We can refer to electrons in non-conducting materials as ‘sluggish’. Typically, they remain fixed in a location, deep inside an atomic composite. It is hence...

Im Focus: Wafer-thin Magnetic Materials Developed for Future Quantum Technologies

Two-dimensional magnetic structures are regarded as a promising material for new types of data storage, since the magnetic properties of individual molecular building blocks can be investigated and modified. For the first time, researchers have now produced a wafer-thin ferrimagnet, in which molecules with different magnetic centers arrange themselves on a gold surface to form a checkerboard pattern. Scientists at the Swiss Nanoscience Institute at the University of Basel and the Paul Scherrer Institute published their findings in the journal Nature Communications.

Ferrimagnets are composed of two centers which are magnetized at different strengths and point in opposing directions. Two-dimensional, quasi-flat ferrimagnets...

Im Focus: World's thinnest hologram paves path to new 3-D world

Nano-hologram paves way for integration of 3-D holography into everyday electronics

An Australian-Chinese research team has created the world's thinnest hologram, paving the way towards the integration of 3D holography into everyday...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Marine Conservation: IASS Contributes to UN Ocean Conference in New York on 5-9 June

24.05.2017 | Event News

AWK Aachen Machine Tool Colloquium 2017: Internet of Production for Agile Enterprises

23.05.2017 | Event News

Dortmund MST Conference presents Individualized Healthcare Solutions with micro and nanotechnology

22.05.2017 | Event News

 
Latest News

How herpesviruses win the footrace against the immune system

26.05.2017 | Life Sciences

Water forms 'spine of hydration' around DNA, group finds

26.05.2017 | Life Sciences

First Juno science results supported by University of Leicester's Jupiter 'forecast'

26.05.2017 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>