The rate of absenteeism averages about 3.5% across all occupations in the US labor force, while in the transit industry absenteeism among operators exceeds 10%. Prior research attributes the transit industry’s higher operator absenteeism to factors falling in three general categories: 1) higher… Read More

The Federal Highway Administration (FHWA) has put a high priority on the use of existing dynamic message signs (DMS) to provide travel time estimates to the public. The Oregon Department of Transportation (ODOT) has three DMS in the Portland metropolitan area configured to display travel time… Read More

The Oregon Department of Transportation (ODOT) Safety Investment Program (SIP) seeks to allocate safety funds in a manner that maximizes safety benefits on preservation projects and at specific high-crash locations. The SIP philosophy targets highway sections for investment with the premise that… Read More

In June 2003 Oregon Driver and Motor Vehicle Services (DMV) implemented a new mandatory medical reporting requirement as required by ORS 807.710, in which some Oregon physicians and health care providers are mandated to report to DMV patients with certain severe and uncontrollable cognitive and… Read More

Project Description: Roughened chutes (simulating natural stream passages) are a cost effective means to provide fish passage at locations where existing culverts and bridges are structurally sound yet do not meet current fish passage rules and regulations. Currently, the construction of roughened… Read More

The Federal Highway Administration (FHWA) has set a high priority on the use of existing dynamic message signs (DMS) to provide travel time estimates to the public. The Oregon Department of Transportation (ODOT) currently has three DMS in the Portland metropolitan area configured to display travel… Read More

The Initiative for Bicycle and Pedestrian Innovation aims to advance the field of bicycle and pedestrian transportation through four primary mechanisms: (1) developing and pursuing a collaborative research agenda that more directly informs practice and and involves students through dissertation… Read More

Revenues from motor fuel are used primarily to support the states' transportation systems. In this time of large state budgetary deficits, it is particularly important that all motor fuel tax funds are collected, remitted, and credited to the respective state highway accounts. However, allegations… Read More

Our transportation system is a key ingredient in the economy, quality of life and urban fabric of the Portland metropolitan area. It has been stated in the past that it is not possible to manage our transportation system tomorrow unless we understand how it is performing today. In this spirit, the… Read More

The American road network is a major economic investment that is a major organizing force for human activity. The road system has profoundly altered ecological processes and, as a result, it is also an important organizing force for ecosystems. Understanding the ecological consequences of road… Read More

Project Sponsor Champion: Bruce Johnson, ODOT State Bridge Engineer . The Oregon DOT has routinely relied on the use of the Wave Equation Analysis of Piles (WEAP) software to dynamically model the bridge pile driving installation operation. Either from the end of initial driving (EOID) when the… Read More

Traffic-monitoring systems, such as those using loop detectors, are prone to coverage gaps, arising from sensor noise, processing errors and transmission problems. Such gaps adversely affect the accuracy of Advanced Traveller Information Systems. This project will explore models based on historical… Read More