Research

Senior Researcher:
Users of the nation’s road and highway network are increasingly dependent on estimates of travel times from where they are to where they want to go. Such information is available from traffic system managers and commercial sources, and multiple mechanisms ranging from variable message signs to GPS... more
Senior Researcher:
Though inherently statistical, model evaluation lacks a unifying statistical framework. NISS was hired to help find a overlying system to help with model evaluation. The research team used Bayesian techniques to measure the degree to which a model captures the underlying reality; theory and methods... more
Senior Researcher:
The Chicago Department of Transportation (CDOT) implemented NISS-developed strategies for operation of traffic signals on the near North side of Chicago. A team consisting of NISS, North Carolina State University, the University of Illinois at Chicago, and CDOT developed prediction models using... more
Senior Researcher:
NISS examined emission models for integrating on road emissions data with traffic parameters and produced a usable method for traffic management operations. The team verified results by integrating results from remote sensor data on emission measurements and traffic data using area wide detectors.... more
Senior Researcher:
NISS defined and developed a strategy for the evaluation of GM computer models, in cooperation with GM scientists, and implemented the strategy on test bed problems. Central research issues included the association of confidence limits to predictions of computer models; uncertainty estimates for... more