Advances in Estimating the Transportation Impact of Development for Urban Locations
Advances in Estimating the Transportation Impact of Development for Urban Locations:
State-of-the-Practice, Urban-Sensitive Methods and Future Advances in Traffic Impact Analysis
Free IBPI Webinar
Thursday, May 22, 2014
10:00 - 11:15 AM PST
Instructor: Kristina Currans, PhD student, Portland State University
Too often our transportation systems detract from the very communities they aim to serve. Many of the hurdles keeping local and regional areas from developing more sustainable and livable environments are the result of institutionalized engineering practice. The use of the Institute of Transportation Engineers Trip Generation Handbook has been known to hamper the ability for jurisdictions to build new developments in multimodal (e.g., transit, pedestrian, and bicycle), urban contexts without overestimating the vehicle trips generated, thereby limiting the implementation of emissions-reducing, mixed-use, developments supporting multimodal travel. This webinar provides an overview of the current trip generation estimation practice and describes both alternative and substitute methods to estimate multimodal, urban-sensitive trip generation rates for new development.
As part of this project that the webinar is based upon, Kristina worked on a team that developed a handheld-computer, tablet-based transportation survey administered at local establishments across the Portland Metro region. Using individual-level, detailed survey information collected from site visitors, an adjustment method was developed and validated to adjust the Institute of Transportation Engineers’ (ITE) vehicle trip rates for urban contexts. Branching from this research, Kristina's thesis utilized household travel surveys to provide similar adjustment to ITE’s rates. As a result of the research findings, Kristina participated in subcommittees that are working to incorporate these findings into the next edition of ITE’s Trip Generation Handbook.