Transportation costs are a significant part of capital and operating costs of large open pit mines. Cost efficiency and high reliability of in pit crushing and conveying systems compared to conventional truck-shovel system makes it more appealing to be utilized in modern mining activities. In this paper the suitable location of an in pit crusher is investigated as a single hub location problem....

On-road vehicle tests of three diesel trucks were conducted by a portable emission measurement system (PEMS) in Chengdu, China. SEMTECH-ECOSTAR provided by Sensors, Inc and MI2, an emissions measuring instrument powered by the Pegasor Particulate Sensor (PPS) were employed to detect gaseous and particle emissions during the tests. The impacts of speed and acceleration on emissions were analyzed...

The autonomous truck-mounted attenuator (ATMA) system is a lead–follower vehicle based on driving and connected technologies. lead truck performs maintenance tasks the road, unmanned follower alerts passing vehicles about moving work zone protects workers equipment. While ATMA has been under testing by transportation operations agencies recently, simulator-based capability supplement, especiall...

The article examines the transport model of costs for transportation on multimodal routes movement goods, depending time in transit, because this approach to optimization goods modern conditions is called their development market Ukraine and world. analysis latest research publications showed that process under control a operator not considered, use interaction modes taken into account, goal sy...

Truck platooning for the transportation of loads is a strategy recently proposed by automotive sector to cope with traffic congestion, fuel consumption, and operational costs. This new way configuring trucks changes typical pressures pavements structures experience. For this reason, research efforts pavement should be aligned propose road-friendly platoon configurations. one objectives European...

A fuel-based method for estimating heavy-duty diesel truck emissions is described. In this method, emission factors are normalized to fuel consumption; vehicle activity is measured by the amount of diesel fuel consumed. For the San Francisco Bay Area during summer 1996, on-road heavy-duty diesel trucks were estimated at the upper bound to emit 110 × 103 kg/day of nitrogen oxides (NOx) and 3.7 ×...

® The contents of this report reflect the views of the authors, who are responsible for the facts and the accuracy of the information presented herein. This document is disseminated under the sponsorship of the Department of Transportation University Transportation Centers Program, in the interest of information exchange. The Transportation Research Board of the National Academies has identifie...

The Minnesota Department of Transportation (Mn/DOT) Precast Slab Span System was initially designed by Mn/DOT with input from University of Minnesota researchers and local fabricators. The bridge system consisted of a series of precast, prestressed concrete inverted tee bridge elements which also served as stay-in-place formwork for the cast-in-place portion of the deck placed in the field. One...

BACKGROUND Vehicular traffic is a major source of outdoor air pollution in urban areas, and studies have shown that air pollution is worse during hours of commuting to and from work and school. However, it is unclear to what extent different commuting behaviors are a source of air pollution compared to non-commuters, and if air pollution exposure actually differs by the mode of commuting. This ...