enable us to undertake the building of roads in the more hilly sections of the county. One shovel and the necessary trucks and graders will be used on construction, while the other shovel and the remainder of the trucks will be free for loading and hauling the much-needed material required for maintain­ ing the remainder of our roads. Thus we expect in the coming year to give better service to ...

This study identified specific regional risk factors for the high rate of pediatric pedestrian trauma in Florida. Of the 29 cases studied prospectively, 3 (10%) occurred near ice cream trucks and 13 (45%) involved "dart-outs"; mean hospital charges were 24,478 +/- 43,939 US dollars. Recommendations included an engineering change for a dangerous intersection, and a population-based recommendatio...

A local municipality has decided to build a sewage pit to receive residential sewage waste arriving by tank trucks. Daily accumulated waste are to be pumped to a nearby waste water treatment facility to be re-consumed for agricultural and construction projects. A discrete-event simulation model using Arena Software was constructed to assist in defining the capacity of the system in cubic meters...

Haul trucks have the potential to generate large amounts of respirable dust. This respirable dust has been shown to be a health hazard to personnel, especially if it has a high silica content. Lack of dust sampling data from haul trucks prompted the completion of a study to quantify respirable dust concentrations. These field studies were conducted measuring instantaneous respirable dust at sta...

The purpose of this paper is to develop a methodology to evaluate the feasibility of using landfill gas (LFG) as a liquefied natural gas (LNG) fuel source for heavy-duty refuse trucks operating on landfills. Using LFG as a vehicle fuel can make the landfills more self-sustaining, reduce their dependence on fossil fuels, and reduce emissions and greenhouse gases. Acrion Technologies Inc. in asso...

Diesel trucks are major contributors of nitrogen oxides (NOx) and primary particulate matter smaller than 2.5 μm (PM2.5) in the transportation sector. However, there are more obstacles to existing estimations of diesel-truck emissions compared with those of cars. The obstacles include both inappropriate methodology and missing basic data in China. According to our research, a large number of tr...

A fuel-based methodology for calculating motor vehicle emission inventories is presented. In the fuel-based method, emission factors are normalized to fuel consumption and expressed as grams of pollutant emitted per gallon of gasoline burned. Fleet-average emission factors are calculated from the measured on-road emissions of a large, random sample of vehicles. Gasoline use is known at the stat...

This study aims at investigating Salmonella environmental contamination of trucks and lairage pens and evaluating the efficiency of an improved cleaning and disinfection protocol to reduce Salmonella environmental contamination. During four days, the lairage of two French pig slaughterhouses were sampled twice a day when pigs were present and once at the end of the week after the cleaning proto...

In order to go ahead in fierce competition to be a hub port, many major container companies all over the world are making every effort to improve their productivity through high-tech devices and information technology application. In particular, in case of container terminal gate, state-of-the-art technologies such as RFID (Radio Frequency Identification) and OCR (Optical Character Reader) are ...

In container terminals, discharging and loading of vessels are critical planning decisions which highly depend on the interaction between the quay cranes and internal trucks, they also have a significant impact on the terminal performance and revenue. Decisions on the assignments of quay cranes and internal trucks to the berthed vessels are typically made sequentially. However, the applicabilit...