نتایج جستجو برای: trucks

تعداد نتایج: 2929  

Journal: :Accident; analysis and prevention 2011
Jason D Lemp Kara M Kockelman Avinash Unnikrishnan

Long-combination vehicles (LCVs) have significant potential to increase economic productivity for shippers and carriers by decreasing the number of truck trips, thus reducing costs. However, size and weight regulations, triggered by safety concerns and, in some cases, infrastructure investment concerns, have prevented large-scale adoption of such vehicles. Information on actual crash performanc...

Journal: :Work 2012
Maral Babapour Anna-Lisa Osvalder Lars-Ola Bligård

The task of handling reach trucks frequently involves poor working postures. The location of the steering wheel in most reach trucks is in front of the operator which requires the drivers to bend forward and stretch their hands for holding onto the steering wheel. To overcome visibility restrictions, this posture is aggravated by twisting and bending their torso sideways. This paper presents a ...

2009
DAVID BROWNSTONE HAO FANG

This paper explores the impact of residential density on households’ vehicle type and usage choices using the 2001 National Household Travel Survey (NHTS). Attempts to quantify the effect of urban form on households’ vehicle choice and utilization often encounter the problem of sample selectivity. Household characteristics that are unobservable to the researchers might determine simultaneously ...

1997
ADLI H. AL-BALBISSI

T total cost of moving goods by truck over a highway system involves two basic compon~nts: -the public costs associated with construction and maintenance of the road network, and the privately financed costs of acquiring, operating, and maintaining a fleet of trucks. These publicly and privately financed costs are directly linked in many ways. For instance, the more trucks there are, the more w...

2013
Mariam Kotachi Ghaith Rabadi Mohammad F. Obeid

World trade has been increasing dramatically in the past two decades, and as a result containers exchange has grown significantly. Accordingly, container terminals are expanding to meet this increase and new container ports have opened. Ports with one or more container terminals are considered complex systems in which many resources, entities and transporters interact to achieve the objective o...

2000
Enrico Mattei

Mobility and energy use in the transportation sector -cars, trucks, trains and planes -is a major source of air pollution. Air pollutant emissions from cars and trucks are particularly problematic because they occur near the ground, often in densely in populated areas. For example, they contribute to the formation of ground-level ozone, a problem in urban areas in various regions of the country...

2011
Mojtaba Shakeri

This report addresses an important crossdocking planning operation which is the scheduling of trucks at crossdocking terminals. The study focuses on the problem in a resource-constrained crossdock. The truck scheduling problem in this scenario decides on the succession of incoming and outgoing trucks at the dock doors of the crossdocking terminal, subject to the availability of the crossdock re...

2005
Dan Middleton

Abstract: Each year more than 40,000 people die as a result of highway crashes, and 1 in 8 of those fatalities involve commercial motor vehicles. USDOT has set an ambitious goal of a 50 percent reduction in truck-related facilities by the end of this decade. Meeting that goal will involve finding ways of improving the performance of all elements of the system – the driver, the roadway, and the ...

Journal: :Accident; analysis and prevention 2004
Devon E Lefler Hampton C Gabler

In the United States, passenger vehicles are shifting from a fleet populated primarily by cars to a fleet dominated by light trucks and vans (LTVs). Because light trucks are heavier, stiffer, and geometrically more blunt than passenger cars, they pose a dramatically different type of threat to pedestrians. This paper investigates the effect of striking vehicle type on pedestrian fatalities and ...

2004
Zhongren Gu

In the past decades, states have utilized weigh-in-motion (WIM) technology to reduce delay and increase enforcement of overweight vehicles. Usually a threshold value is used to filter and sort the trucks by weight. If the WIM reading of a truck is over the threshold, the truck would be sent to a static scale for further inspection. To fully utilize the WIM technology and enhance the operational...

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