Friday, February 5, 2016 - 12:00pm to 1:00pm

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The overall goal of this research was to quantify the safety performance of alternative traffic control strategies to mitigate right-turning-vehicle/bicycle collisions, often called "right-hook" crashes, at signalized intersections in Oregon.

A two stage experiment was developed in the OSU high-fidelity driving simulator to investigate the causal factors of right-hook crashes at signalized intersections with a striped bike lane and no right-turn lane, and to then identify and evaluate alternative design treatments that could mitigate the occurrence of right-hook crashes.

Experiment 1 investigated motorist and environmental related causal factors of right-hook crashes, using three different motorist performance measures:

  1. visual attention,
  2. situational awareness (SA) and
  3. crash avoidance behavior.

Data was collected from 51 participants (30 male and 21 female) turning right 820 times in 21 different experimental scenarios. It was determined that the worst case right-hook scenario occurred when a bicycle was approaching the intersection at a higher speed (16 mph) and positioned in the blind zone of the motorist. In crash and near crash situations (measured by time-to-collision...

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Friday, February 12, 2016 - 12:00pm to 1:00pm

Where: Room 204 of the Distance Learning Center Wing of the Urban Center at PSU

12:00 Noon, PST.

Follow this link on the day of the seminar to stream it live.

Shared space is a traffic calming technique as well as urban design concept. Also known as ‘Naked Streets’, this technique strives to fully integrate the roadway into the urban fabric by removing elements such as lane markings, curbs, and traffic signs. By removing these elements and creating a more plaza-like space, these spaces become ambiguous and no user group has priority. The technique is relatively new, and the majority of existing research concerns pedestrians only.

This study focused on intersections in England with the goal of understanding how bicycle riders perceive and travel through shared space intersections.

Using video observations, this research analyzed the variations in the paths cyclists rode through the intersections and collected data on several variables related to both the cyclists and their interactions with the site itself such as helmet use and riding through crosswalks.

The analysis indicated that cyclists rode similarly through both shared and control intersections, and that a large percentage of riders preferred to ride farther from motor vehicles when given the space to do so. This project offered further insight in how to best design shared space...

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Thursday, February 18, 2016 - 10:00am to 11:00am

Why model pedestrians?

A new predictive tool for estimating pedestrian demand has potential applications for improving walkability. By forecasting the number, location and characteristics of walking trips, this tool allows for policy-sensitive mode shifts away from automobile travel.

There is growing support to improve the quality of the walking environment and make investments to promote pedestrian travel. Despite this interest and need, current forecasting tools, particularly regional travel demand models, often fall short. To address this gap, Oregon Metro and NITC researcher Kelly Clifton worked together to develop this pedestrian demand estimation tool which can allow planners to allocate infrastructure based on pedestrian demand in the Portland, Oregon metropolitan area. The tool is also designed to be replicable, so that other metropolitan areas can adapt the model to begin estimating pedestrian demand in their cities.

This webinar will provide an overview of how the tool functions as well as a framework for applying this method in other cities.

...

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Friday, February 19, 2016 - 12:00pm to 1:00pm

Where: Room 204 of the Distance Learning Center Wing of the Urban Center at PSU

12:00 Noon, PST.

Follow this link on the day of the seminar to stream it live.

Dynamic transit assignment models have the potential to improve local transportation agencies’ capability to forecast the demand for public transit facilities under conditions of limited capacity or varying reliability. In order to be useful in practice, the simulated route choices of passengers in these models need to reflect the behavior of actual residents observed in local travel surveys. Most analysis methods of revealed route choice preferences developed to date have either (1) not been proven to provide consistent estimates or (2) required an untenable computation time for practical applications. Furthermore, no model of transit route choice has accounted for variability in both passenger behavior and vehicle arrivals.

This seminar will focus on an econometric framework that Hood Transportation Consulting designed to overcome these limitations in partnership with the second FHWA Strategic Highway Research Program, the Metropolitan Transportation Commission of the San Francisco Bay Area, the San Francisco County Transportation Authority, and the Puget Sound Regional Council. The framework is based on a recursive logit model where the traveler makes a series of dynamic choices which...

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Friday, February 26, 2016 - 12:00pm to 1:00pm

Where: Room 204 of the Distance Learning Center Wing of the Urban Center at PSU

12:00 Noon, PST.

Follow this link on the day of the seminar to stream it live.

Many cities have adopted minimum parking requirements, but we have relatively poor information about how parking infrastructure has grown.

In this research, using building and roadway growth models, we estimate how parking has grown in Los Angeles County from 1900 to 2010, and how parking infrastructure evolves, affects urban form, and relates to changes in automobile travel.

We find that since 1975, the ratio of residential offstreet parking spaces to automobiles in Los Angeles County is close to 1.0 and the greatest density of parking spaces is in the urban core. Most new growth in parking occurs outside of the core. 14% of incorporated land in Los Angeles County is committed to parking. Uncertainty in our space inventory is attributed to our building growth model, onstreet space length, and the assumption that parking spaces were created as per the requirements.

The continued use of minimum parking requirements is likely to encourage automobile use at a time when metropolitan areas are actively seeking to manage congestion and increase transit use, biking, and walking. Widely discussed ways to reform parking policies may be less than effective if planners do not consider the...

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Friday, March 4, 2016 - 12:00pm to 1:00pm

More information about this seminar will be available soon. If you would like to receive weekly seminar announcements during the term, sign up for our mailing list and choose at least one of the Friday Transportation Seminar options (local events, online seminars or both).

Friday, March 11, 2016 - 12:00pm to 1:00pm

More information about this seminar will be available soon. If you would like to receive weekly seminar announcements during the term, sign up for our mailing list and choose at least one of the Friday Transportation Seminar options (local events, online seminars or both).

Thursday, April 21, 2016 - 10:00am to 11:00am

Oregon, and Portland in particular, is internationally known for its love for bikes. Not only does the region have some of the highest bike ridership in the nation but the Oregon bike manufacturing industry is quickly growing as well. Oregon’s electric bike (e-bike) market is also growing, but little data are available on the potential market and e-bike user behavior and interest.

Only a limited amount of research has explored the potential new market segments for e-bikes and the economic, operational, safety, and transportation issues surrounding e-bikes in the United States. This webinar will present findings from a research project evaluating e-bike use at Three Kaiser Permanente NW employment centers in the Portland region.

The project's primary goal was to test user acceptance of electric-assist folding bicycles as a first/last mile commuting solution.

Check back here closer to the event date for more information, or sign up for our newsletter and select "online webinars and seminars" to receive notifications about upcoming online training opportunities.

The times listed for all NITC webinars are in Pacific Standard Time.