Research

The main objective of this study was to calibrate the AASHTO pavement temperature and seasonal adjustment models, or to develop new models. The models were based on New Jersey conditions and also will be used in network- and project-level FWD analysis.

For this study, 24 pavement sections were instrumented and a n…

In this project, a prototype knowledge-based expert system (KBES) integrated with a Geographical Information System (GIS) is developed. Geomedia Pro is used as the GIS interface for data entry. A software bridge is also implemented to ensure swift data exchange between Synchro, which is a commercial signal optimization s…

Reinforced and unreinforced elastometric bearing pads have been used for bridges in NJ for about five years. The shape of these bearings is square or rectangular and their orientation is generally in the direction of thermal movements. Although the direction of thermal movement for straight bridges can be reasonably pred…

The New Jersey Department of Transportation (NJDOT) Research Division wanted to develop and implement an interactive CD-ROM as a New Jersey-specific companion manual to the 1993 AASHTO Guide for Design of Pavement Structures. The research team developed a framework for the companion manual that met NJDOT’s requirem…

In September 2000, the New Jersey Turnpike Authority introduced E-ZPass technology along with the first stage of its time of day pricing program. In January 2003, toll levels for each time period and vehicle type were increased as part of the second stage of the NJ Turnpike time of day pricing program. The project had th…

The State of New Jersey is extremely populated and rather small geographically. In order to ensure safety at all of the airports in New Jersey, an airport obstruction identification system must be developed. The New Jersey Department of Transportation (NJDOT) Division of Aeronautics is statutorily obligated to identify a…

This research presents a statistical approach for estimating truck volumes, based primarily on classification counts and information on roadway functionality, employment, sales volume and number of establishments within the state. Models have been created that may predict truck volumes, flows and percentages at any given…

The scope of this study is to determine the new trends and approaches in transportation modeling and assist transportation professionals in reviewing features of alternative software packages, evaluating them, and comparing their capabilities. Information for selected packages has been collected through publicly availabl…

The New Jersey Department of Transportation (NJDOT), as many other DOT’s, moved towards utilizing a high-speed profiler to measure the International Roughness Index (IRI) as a part of the state smoothness acceptance specifications. Although high-speed profilers have been in use for long time as a tool to collect networ…