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View Andy Kading's slides
Andy Kading, Graduate Student Researcher, Portland State University
Topic: Managing User Delay with a Focus on Pedestrian Operations
Across the U.S, walking trips are increasing. However, pedestrians still face significantly higher delays than motor vehicles at signalized intersections due to traditional signal timing practices of prioritizing vehicular movements. This study explores pedestrian delay reduction methods via development of a pedestrian priority algorithm that selects an operational plan favorable to pedestrian service, provided a user defined volume threshold has been met for the major street. This algorithm, along with several operational scenarios, were analyzed with VISSIM using Software-In-The-Loop (SITL) simulation to determine the impact these strategies have on user delays. One of the operational scenarios examined was that of actuating a portion of the coordinated phase, or actuated-coordinated operation. Following a discussion on platoon dispersion and the application of it in the...Read more
A ‘travel plan’ is a travel demand management strategy that contains a package of site-specific measures designed to manage car use and encourage the use of more sustainable transport modes. Much of the existing literature on travel plans focuses on their application in workplaces and schools. Travel plans can be required for new residential developments as part of the land use planning and approvals process. However, there is limited understanding of the extent to which they have influenced travel behaviour. This presentation focuses on the assessment of travel plans developed for new residential apartment developments in Melbourne, Australia. Consideration is given to both the quality of travel plans for new residential developments and their effectiveness in terms of their impact on travel behaviour.
A NITC research project from Portland State University introduces a method of cleaning up land use data, for use in improved transportation models.
Transportation and land use are closely interdependent. Considerable work is underway, in Oregon and elsewhere, to develop models that integrate the two.
Planners creating these models often spend the bulk of their time preparing data on the various land uses. Many times the data, gathered from diverse sources, is incomplete and requires the planner to find missing information to fill in the gaps.
In fields outside of transportation, there have been considerable advances in techniques to do this. Data-mining and machine-learning techniques have been developed, for example, to systematically detect fraud in credit data, reconcile medical records and clean up information on the web.
In the transportation modeling community, by contrast, most efforts to tackle the problem are tied to a specific model system and a chosen study area. Few have produced reusable tools for processing land use data.
Liming Wang, lead investigator of the project Continuous Data Integration for Land Use and Transportation Planning and Modeling, offers such reusable...Read more
National Geographic recently described Portland as the City that “…gets almost everything right; it’s friendly, sustainable, accessible, and maybe a model for America’s future” (Cover story, Dec. 2009). Portland has a shared vision of a livable city, articulated in many different ways. It is seen in neighborhood self-help projects, big municipal investments, enlightened developers that build infill projects consistent with city plans, and the highest recycling participation rate in the country. Taken together Portland is a city that is environmentally responsible, and conscious of both street level and of global impact of doing things right.
Arguably, Portland’s first act of ‘building green’ was in 1892, when it built a reservoir network to protect and preserve the sole source of its drinking water, the pristine . Today, this 102-square mile conservation zone provides ample fresh water to a region of half million people
Fast forward almost 100 years and the same ethic motivated Portlanders to reject a Robert Moses-style highway plan...Read more