نتایج جستجو برای: axles truck

تعداد نتایج: 5185  

2003
Sheila G. Klauer Thomas A. Dingus Vicki L. Neale Robert J. Carroll

Driver fatigue is an important safety issue for long-haul truck drivers. To provide an efficient means of obtaining sleep, long-haul truck drivers often use tractors equipped with sleeper berth units. Depending on the type of cargo and distances traveled, long-haul truck drivers either drive in teams or alone as single drivers. Team drivers, therefore, typically sleep in a moving truck whereas ...

1997
M. S. A. Hardy D. Cebon

An articulated lorry was instrumented in order to measure its performance in straight-line braking. The trailer was fitted with two interchangeable tandem axle sub–chassis, one with an air suspension and the other with a steel monoleaf 4–spring suspension. The brakes were only applied to the trailer axles, which were fitted with anti–lock braking systems (ABS), with the brake torque controlled ...

2006
Muhammad Anwar Muhammad Naeem Rizwan Iqbal Iffat Shabbir

Background: HIV thrives on mobile population. Truck drivers particularly the long distance truck drivers are more vulnerable to HIV infection, because they travel a lot, remain cut off from the mainstream society, often engage in activities such as having unsafe sex with commercial sex workers and fellow crew members, in order to reduce their loneliness. Material & Methods: In this study 75 tru...

2016
Rama Greenfield Ellen Busink Cybele P. Wong Eva Riboli-Sasco Geva Greenfield Azeem Majeed Josip Car Petra A. Wark

BACKGROUND Professional truck drivers, as other shift workers, have been identified as a high-risk group for various health conditions including cardiovascular disease, obesity, diabetes, sleep apnoea and stress. Mobile health technologies can potentially improve the health and wellbeing of people with a sedentary lifestyle such as truck drivers. Yet, only a few studies on health promotion inte...

Journal: :Journal of intelligent and connected vehicles 2023

Global Navigation Satellite System (GNSS) data is an inexpensive and ubiquitous source of activity data. Positioning (GPS) example such Although there have been several studies about inferring device using GPS from a consumer device, freight presents unique challenges for having low variable frequency, long transmission gaps, frequent unpredictable ID resetting preserving privacy. This study ai...

Journal: :Organic & biomolecular chemistry 2014
Nasim Farahani Kelong Zhu Nadim Noujeim Stephen J Loeb

A new templating motif for the formation of [2]pseudorotaxanes is described in which rigid, Y-shaped axles with an imidazolium core and aromatic substituents at the 2-, 4- and 5-positions interact with [24]crown-8 ether wheels ([24]crown-8 and dibenzo[24]crown-8). The Y-shape of the axle significantly enhances the association between axle and wheel when compared to simple imidazolium cations.

2009
Ralph Kunze Richard Ramakers Klaus Henning Sabina Jeschke

One opportunity to manage the increase of freight transportation and to optimize utilization of motorway capacities is the concept of truck platoons. With the aid of Advanced Driver Assistance Systems, trucks are electronically coupled keeping very short gaps (approx. 10 meters) to form truck platoons on motorways. This contributes to optimisation of traffic flow and reduction of fuel consumpti...

2007
Bor-Shong Liu Chih-Hung Hsu Hsien-Yu Tseng Tung-Chung Chia

The objective of this study was utilized the head and eye-tracker system to examine the effects of visual field between sedan and mixed concrete truck on road sign recognition. Participants were asked to search the traffic signs on driving video and give a verbal report instantaneously for visual search. Results of ANOVA revealed that the mode of vertical direction of eye gaze were significant ...

2017
John Gunnar Carlsson Siyuan Song

We determine the efficiency of a delivery system in which an unmanned aerial vehicle (UAV), or a fleet of UAVs, provides service to customers while making return trips to a truck that is itself moving. In other words, a UAV picks up a package from the truck (which continues on its route), and after delivering the package, the UAV returns to the truck to pick up the next package. Although the ha...

2016
Changkun Chen Jun Zhang

BACKGROUND Fatigue driving is a leading cause of traffic fatalities and injuries in China, especially among heavy truck drivers. The present study tried to examine which and how factors within the human-vehicle-roadway-environment system contribute to the occurrence of crashes involving fatigued truck drivers. FINDINGS To reduce such risk on the road, a total of 9168 crashes which occurred in...

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