When reconstructing vehicle accidents, it is often important to record the accident scene roadway geometry. Survey techniques such as the plane surveying method and the coordinate and triangulation method, have been the most widely used recording methods and are generally accepted in the industry. This paper proposes to introduce video tracking photogrammetry as a new tool in gathering accident...

To save the escaping time for the coal mine flood, improve the emergency rescue efficiency, an NShortest Paths algorithm utilized bidirectional search is presented, which is based on the classical Dijkstra algorithm. The algorithm was proposed roadway length equivalent weights to simulate the mine roadway length. Combined with GIS theory to extract topology structure of mine, an undirected weig...

Millions of U.S. workers are at risk for a work-related motor vehicle crash. Fatality data show that across all industries, motor vehicle crashes are consistently the leading cause of work-related fatalities. Of 43,025 work-related fatalities reported by BLS between 2003 and 2010, 10,202 were the result of single- or multiple-vehicle crashes of workers driving or riding in a vehicle on a public...

Components of road surface degradation are common constituents of urban runoff. Studies conducted in Europe have indicated that as much as 0.05-0. 10 inch of pavement surface is worn away from the roadway each year. The largest component of street pavement is the aggregate material itself, with additional smaller quantities originating from the asphalt binder, fillers and substances applied to ...

The outcomes achieved at the completion of a major industry-funded project undertaken by the CSIRO Mining Technology Group to advance the automation capability of continuous mining equipment in underground coal mining operations are reported. The details of a practical steering and guidance solution for autonomous Continuous Miner operation employing novel inertial navigation aiding techniques ...

Traffic exposure assessments could misclassify the extent and locations of exposure if traditional recall surveys and self-reported travel diaries do not record all participant activities. The Harbor Communities Time Location Study (HCTLS) examines the nature, extent and implications of underreported locations/ trips in a case study which used portable Global Positioning Systems (GPS) devices t...

The objective here is to evaluate the intra-and inter-vehicle variability in realworld light-duty gasoline vehicle emissions and assess implications for development of onroad vehicle emission inventories. A field study was conducted to characterize variability for selected vehicles for both total emissions and emission rates by routes, time of day, road grade, and among vehicles. Real-world dat...

A compelling body of international evidence now exists suggesting a causal link between exposure to airborne particulate matter (PM) and adverse health consequences. Travel microenvironments have come under particular scrutiny because PM levels are known to be substantially higher than ambient levels from Fixed Site Monitors (FSMs) on which air quality assessments are based and because people s...