Predicting a crash occurrence is the key to traffic safety. Real-time identification of freeway segments with high crash potential is addressed in this paper. For this study, historical crashes and corresponding traffic-surveillance data from loop detectors were gathered from a 36-mi corridor of...

Research into the application of freeway loop detector data for traffic safety has gained momentum in recent years. The incompleteness of data from loop detectors has been a common problem in both the development and the implementation of models. The effect of individual crash precursors,...

Comprehensive environmental models such as the Soil and Water Assessment Tool (SWAT) are becoming an integral part of decision making processes for effective planning and management of natural resources. Before their use as decision making aid, however, models must be properly evaluated to...

Models have become important decision making aids. Model evaluation (i.e., global sensitivity analysis, calibration and uncertainty analysis), is crucial to improve their prediction accuracy and reduce the likelihood of making decisions that could lead to undesirable policy outcomes. The...

In recent years, governments in many countries have begun privatizing infrastructure sectors. Some of the forces driving this movement have been a scarcity of public resources, an increase in the demand for services, a political trend toward the deregulation of infrastructure, and an expansion...

Plug-in Hybrid Electric Vehicles (PHEVs) will soon start to be introduced into the transportation sector, thereby raising a host of issues related to their use, adoption and effects on the electricity sector. Their introduction has the potential to significantly reduce carbon emissions from the...

Increases in car ownership and usage have resulted in serious traffic congestion problems in many large cities worldwide. Innovative travel modes and services can play an important role in improving the efficiency and sustainability of transportation systems. In this study, we evaluate the...

Companies in every industry, including both manufacturers and service providers, must make decisions about their operational footprint -the amount of building space required for business needs such as storing inventory and equipment and providing work areas for employees. Changes to the existing...

With increased global competition, companies find that they must adjust and adapt to a supply chain model that incorporates more strategic suppliers. Pratt & Whitney, a division of United Technology Corporation, is no different as it seeks to streamline selection of suppliers to satisfy their...

(cont.) by presenting two case studies both in the context of the Chicago Transit Authority. One study proposes an enhanced method of inferring the rail trip OD matrix from an origin-only AFC system to replace the routine passenger survey. The proposed algorithm takes advantage of the pattern of...