Public Transportation

Quantifying Transit Travel Experiences from the Users’ Perspective With High-Resolution Smartphone and Vehicle Location Data: Methodologies, Validation, and Example Analyses

Carrel, Andre
Lau, Peter S. C.
Mishalani, Rabi G.
Sengupta, Raja
Walker, Joan L.
2015

While transit agencies have increasingly adopted systems for collecting data on passengers and vehicles, the ability to derive high-resolution passenger trajectories and directly associate them with transit vehicles in a general and transferable manner remains a challenge. In this paper, a system of integrated methods is presented to reconstruct and track travelers usage of transit at a detailed level by matching location data from smartphones to automatic transit vehicle location (AVL) data and by identifying all out-of-vehicle and in-vehicle portions of the passengers trips. High-...

The connected traveler: using location and personalization on mobile devices to improve transportation

Manasseh, Christian
Ahern, Katherine
Sengupta, Raja
2009

In this paper we present the connected traveler architecture that allows mobile users to personalize the delivery of transportation related content. The widespread use of mobile devices and the increasing availability of wireless internet present an opportunity for transportation engineers to deliver mobility and safety content to the drivers, pedestrians and public transit users. Connectedtraveler.org enables this technology by combining the location of the mobile user with pre-defined personalized profiles to improve user experience.

The connected traveler: using location and personalization on mobile devices to improve transportation

Manasseh, Christian
Ahern, Katherine
Sengupta, Raja
2009

In this paper we present the connected traveler architecture that allows mobile users to personalize the delivery of transportation related content. The widespread use of mobile devices and the increasing availability of wireless internet present an opportunity for transportation engineers to deliver mobility and safety content to the drivers, pedestrians and public transit users. Connectedtraveler.org enables this technology by combining the location of the mobile user with pre-defined personalized profiles to improve user experience.

Using Smartphones to Perform Transportation Mode Determination at the Trip Level

Parlak, Siddika
Jariyasunant, Jerald
Sengupta, Raja
2012

In this paper, the authors address the problem of determining the transportation mode at the trip level using mobile phones. The authors describe an algorithm that processes raw global positioning system (GPS) and accelerometer data to detect whether a person is standing, walking, biking, driving or taking public transit and further processes this data to determine the trip mode. This work contributes to existing research, which determines exact transportation modes at each time instant, by adding context to the mode data with trip definitions that are defined by the activity-based travel...

Safety impacts of implementing median bus lane system in Seoul Metropolitan Area : vehicle-to-vehicle and vehicle-to-pedestrian crashes

Choi, Keechoo
Lee, Jaeyoung
Ryu, Ingon
Yi, Yongju
2018

In metropolitan areas, public transportation has been encouraged as a sustainable mode because they can effectively transport many people and have less impact on traffic congestion and environment. In order to increase public transportation ridership, many jurisdictions have attempted to provide improved travel time and reliability of the public transportation system. These efforts include installing transit signal priority, dedicated median/curb bus lanes, bus rapid transit, bus bypass shoulder lanes, et cetera. In Korea, dedicated median bus lanes have been installed and operated since...

Interaction of Air and High-Speed Rail in Japan

Clever, Reinhard
Hansen, Mark M.
2008

There has been a unique convergence of factors that have contributed to Japan's outstanding public transportation system. The paper focuses on two modes of transportation: air and high-speed rail (HSR). These two modes do not complement each other as in Europe, but compete head-on in Japan. Moreover, Japan does not have to contend with market-distorting public subsidies, because both companies operating HSR in the corridor of interest are highly profitable, primarily because of their HSR service. The Japanese transportation system therefore provides an excellent environment in which to...

Lane Assist Systems for Bus Rapid Transit, Volume I: Technology Assessment

Shladover, Steven E.
Zhang, Wei-Bin
Jamison, Doug
Carey, Graham
Viggiano, Stefano
Angelillo, David
Cunradi, Jim
Sheehan, Brian
Schumacher, Dave
Oropeza, Maurilio
Hardy, Matthew
Kulyk, Walter
Gross, Yehuda
2007

This report documents the information collected by an FTA-led delegation to several European organizations that have had experience in the development and operation of transit lane assist systems based on three different technologies, including (1) optical guidance in Rouen, France, (2) magnetic guidance in Eindhoven, Netherlands and (3) mechanical guidance in Essen, Germany. It includes summaries of the briefings prepared by the European hosts in response to questions from the delegation, the discussions the delegation had with their hosts and observations based on riding the systems in...

Predicting Aircraft Trajectory Choice – A Nominal Route Approach

Liu, Yulin
Hansen, Mark
Lovell, David J
Ball, Michael O
2018

In this work, we propose a novel approach to predict aircraft trajectory choice. A trajectory clustering technique is used to consolidate historical flight tracks into a small set, and the cluster assignment results are then used as the ground truth of the route choice. Three types of features are used to predict the trajectory choice: convective weather, wind, and Miles-In-Trail (MIT) restrictions. Dimension of the features is greatly reduced by matching them with the representative trajectories of different clusters, which we call Nominal Routes. Four popular machine learning models are...

Improvements to Airport Ground Access and Behavior of Multiple Airport System: BART Extension to San Francisco International Airport

Monteiro, Ana Beatriz Figueiredo
Hansen, Mark
1996

Metropolitan regions with more than one major airport—multiple airport systems (MASs)—are important to the U.S. air transport system because of the large number of passengers they serve. Airport ground access factors strongly influence the allocation of traffic in MASs. The effects of improvements to airport ground access (by nonautomobile modes) on airport use in a MAS are analyzed. A case study of an extension of a Bay Area Rapid Transit rail link into the San Francisco International Airport (SFO) is presented. Two airport choice models were developed. One is a nested logit model in...

Optimal Detector Location for Bus Signal Priority

Liu, Huitao
Skabardonis, A
Zhang, Wenfen
Li, Mei
Transportation Research Board
2004

A theoretical model is presented to quantitatively address the relation between bus detector location and effectiveness of transit signal priority (TSP) systems, supplemented by a sample model application and simulation experiments on a real-world arterial corridor. The simulation results agree very well with results from the theoretical model. The findings of this research contribute to a better understanding of the interaction of the various components of TSP systems, which can lead to better TSP design and implementation.