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Full-Text Articles in Urban Studies and Planning

Effects Of Comprehensive Plan Amendments On Interchange Traffic In Oregon, James G. Strathman, Thomas J. Kimpel, Paul Roland Leistner, Kenneth Dueker Jul 2005

Effects Of Comprehensive Plan Amendments On Interchange Traffic In Oregon, James G. Strathman, Thomas J. Kimpel, Paul Roland Leistner, Kenneth Dueker

Center for Urban Studies Publications and Reports

In this paper we examine the effects of amendments to local comprehensive plans on interchange performance. Plan amendments over a 15-year period in Oregon resulting in changes to industrial or commercial land use were reviewed to identify those that occurred within one mile of an interchange. Regression analysis was then performed to estimate the impact of nearby plan amendments on subsequent interchange ADT. Plan amendments were found to have a substantial ADT effect on rural interchanges, but their incidence was very limited. In urban core areas, the estimated effect of plan amendments was negligible, possibly due to interchange congestion or ...


Impacts Of Trip Permit Program Changes On Vehicle Operations And Inspections, Jennifer Dill Mar 2005

Impacts Of Trip Permit Program Changes On Vehicle Operations And Inspections, Jennifer Dill

Urban Studies and Planning Faculty Publications and Presentations

This research project has two inter-related parts: (1) an assessment of the equity of implications of the emissions inspection program in the State of Oregon and elsewhere; and (2) an assessment of the impacts of the new trip permit program on vehicle operations. The study provides a better understanding of the benefits and equity impacts of the inspection program and the recent change to the trip permit system. The findings will be of use to Oregon, as well as all public agencies that oversee vehicle inspection programs throughout the country. The research includes specific recommendations for addressing equity concerns and ...


Analysis Of Transit Signal Priority Using Archived Trimet Bus Dispatch System Data, Thomas J. Kimpel, James G. Strathman, Robert L. Bertini, Steve Callas Feb 2005

Analysis Of Transit Signal Priority Using Archived Trimet Bus Dispatch System Data, Thomas J. Kimpel, James G. Strathman, Robert L. Bertini, Steve Callas

Center for Urban Studies Publications and Reports

This paper presents findings on changes in bus running times, on-time performance, and excess passenger wait times following implementation of transit signal priority in select bus corridors in the Portland metropolitan region. Analysis of the effectiveness of transit signal priority is often undertaken using simulation techniques or empirical studies that are either limited in scope and/or data availability. The present research uses an abundance of trip-level data collected from TriMet’s Bus Dispatch System. The study focuses on the most common performance measures of interest to both transit operators and passengers. Our study shows that the expected benefits of ...