Book of abstracts of the 24th Euro Working Group on Transportation Meeting

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Using Data Mining to Analyze Dwell Time and Nonstop Running Time in Road-Based Mass Transit Systems

Travel Time plays a key role in the quality of service in road-based mass transit systems. In this type of mass transit systems, travel time of a public transport line is the sum of the dwell time at each bus stop and the nonstop running time between pair of consecutives bus stops of the line. The aim of the methodology presented in this paper is to obtain the behavior patterns of these times. Knowing these patterns, it would be possible to reduce travel time or its variability to make more reliable travel time predictions. To achieve this goal, the methodology uses data related to check-in and check-out movements of the passengers and vehicles GPS positions, processing this data by Data Mining techniques. To illustrate the validity of the proposal, the results obtained in a case of use in presented

Portland\u27s Changing Landscape

Occasional Papers in Geography Publication No. 4 What is the nature and character of Portland? What are the conditions, changes and developments that have made it what it is? How does Portland compare with other places? What makes it unique? These are some of the question pursued in this volume. This book contains thirteen chapters discussing various facets of Portland\u27s environmental, economy, and character. It is an up-to-date and comprehensive analysis of dynamics and change in the landscape. An overview is provided of Portland as a city and place to live, as well as its functional significance on a national and international basis. Two threads are woven through the tapestry of these essays. One is that Portland is a big city but with many attributes of a small town. The other is the closeness and accessibility of city and nature. The challenge is how to nurture and maintain both - to have our cake and eat it too. The evidence is clear that most American cities have not been able to achieve this. Only the future can tell how Portland will fare. The authors are all professional geographers or work in closely related fields. All have been involved with the Portland scene for a number of years and are uniquely qualified to write about these topics. While each approaches problems from his or her own perspective, the net result is a summing up, a taking stock of where we have been and where we are going. When considered as a whole the book should provide a better view than we have had of the nature and character of this special place.https://pdxscholar.library.pdx.edu/geog_occasionalpaper/1000/thumbnail.jp

The energy dilemma and its impact on air transportation

The dimensions of the energy situation are discussed in relation to air travel. Energy conservation, fuel consumption, and combustion efficiency are examined, as well as the proposal for subsonic aircraft using hydrogen fuel

Transportation Statistics Annual Report 2020

The Bureau of Transportation Statistics (BTS) is legislatively mandated to prepare and submit a Transportation Statistics Annual Report to Congress and the President each year. Using data collected or compiled by BTS, this 25th edition of the report describes the Nation's transportation system, the system's performance, its contributions to the economy, and its effects on people and the environment, presenting the latest available data to examine national trends for all modes of transportation

Best Types of Commodity Flow Data for Freight, Railroad, and Ports and Waterways Studies

The understanding of freight movement is critical to economic development and competitiveness and to make decisions regarding the transportation system. Despite the increased interest in freight planning and modeling, freight data are limited in availability and granularity, and the existing sources are incomplete or outdated. This research analyzes various types of public and proprietary freight databases to determine which are most helpful for planning, programming, and designing future infrastructure on the truck, rail, air, and waterway networks within Minnesota and surrounding states. There are some comprehensive multimodal freight databases that provide different levels of data granularity. These are typically complemented with other data sources that are specific to a transportation mode. We also interview stakeholders involved in freight planning in Minnesota to identify data gaps and capture current and future data needs. Important needs include (i) mode specific freight data, especially for waterways and ports and air freight; (ii) equity considerations in freight transportation; and (iii) understanding the relationship between freight transportation and climate change. Additional freight data are much needed overall to inform economic development and funding prioritization, as well as to evaluate and minimize supply chain disruptions