Boston Harbor Project: Water Transportation Systems Support a Major Urban Construction Project

Author(s):  
Stephen Corbett

The Massachusetts Water Resources Authority (MWRA) is an independent authority. MWRA is constructing new primary and secondary wastewater treatment facilities on Deer Island in Boston Harbor. The new facilities will replace two antiquated primary treatment plants located on Deer Island and Nut Island, which is in Quincy Bay. Information on project management, project mitigation, and the facility siting process is provided, and the marine facilities and transportation services and the Boston Harbor Project labor agreement are described.

Author(s):  
Ryoichi Sakano ◽  
Julian Benjamin

Local public transportation agencies provide a nonemergency human transport service to nearby hospitals and doctors' offices. Some users require specialized medical services at a hospital located out of the normal service area. In the Piedmont/Triad region of North Carolina, the Piedmont Authority for Regional Transportation (PART) began PART Connections in April 2004, to provide two daily transportation services between the Piedmont/Triad area and the UNC/Duke medical areas. Using current operating cost data of participating transportation systems, round-trip costs to the UNC/Duke medical areas from each county and to the nearest PART Connections stop are estimated. Given the actual number of passengers served by PART Connections during the first nine-month period of the service, the net saving in the operating cost by participating PART Connections is estimated for each system. Then, the total service hours saved by using PART Connections are estimated for each system, and are used to estimate the number of additional passengers served within the system. It is estimated that PART Connections could provide a net saving of $38,000 on operation expenses annually to the participating four county transportation systems. More importantly, PART Connections would enable the four county systems to provide more than 10,000 additional passenger trips within each county annually, by using the saved resources. In addition, 12 local community transportation providers in 15 western counties of the Piedmont/Triad region, which currently do not participate in PART Connections, are estimated to save a modest $9,600 in total annually, by using PART Connections.


Author(s):  
Muhammad Ahsanul Habib ◽  
Md Asif Hasan Anik

This study proposes a framework to analyze public discourse in Twitter to understand the impacts of COVID-19 on transport modes and mobility behavior. It also identifies reopening challenges and potential reopening strategies that are discussed by the public. First, the study collects 15,776 tweets that relate to personal opinions on transportation services posted between May 15 and June 15, 2020. Next, it applies text mining and topic modeling techniques to the tweets to determine the prominent themes, terms, and topics in those discussions to understand public feelings, behavior, and broader sentiments about the changes brought about by COVID-19 on transportation systems. Results reveal that people are avoiding public transport and shifting to using private car, bicycle, or walking. Bicycle sales have increased remarkably but car sales have declined. Cycling and walking, telecommuting, and online schools are identified as possible solutions to COVID-19 mobility problems and to reduce car usage with an aim to tackle traffic congestion in the post-pandemic world. People appreciated government decisions for funding allocation to public transport, and asked for the reshaping, restoring, and safe reopening of transit systems. Protecting transit workers, riders, shop customers and staff, and office employees is identified as a crucial reopening challenge, whereas mask wearing, phased reopening, and social distancing are proposed as effective reopening strategies. This framework can be used as a tool by decision makers to enable a holistic understanding of public opinions on transportation services during COVID-19 and formulate policies for a safe reopening.


2007 ◽  
Vol 34 (9) ◽  
pp. 1038-1047 ◽  
Author(s):  
Musandji Fuamba ◽  
Gilles Brosseau ◽  
Éric Mainville

Optimal management of power plant units is achieved when the global efficiency of the units and the minimization of the total hydraulic head losses through the water transportation systems can be combined. Evaluating these hydraulic head losses appears to be very difficult due to the complexity of the flow conditions through the hydraulic structures. A hydraulic energy based method to determine head losses in the surge chamber has been proposed in this paper, as well as a method to manage the opening of units which would optimize the production of electricity. This method was applied to a case study, and successful results have been obtained showing how the head loss varies in the surge chamber.Key words: hydraulic head losses, power plant unit, surge chamber, unit efficiency, three-dimensional flow conditions, turbulent flow models, computational fluid dynamics.


Author(s):  
David A. Faria ◽  
Wilma Smith

A study was done to develop various innovative transportation strategies to address the changing travel needs of Arlington, Texas, residents. The study was guided by the Arlington Community Transportation Study Committee. It developed the transportation niche concept: the ability to use alternative community transportation services to address specific needs of the community in different parts of the city. Five high-priority niches were studied in detail. The success of the individual niches in particular and the integrated transportation system in general will rely heavily on the cooperation and coordination between the public and the private sectors and the acceptance of the niche concept by the general public.


2007 ◽  
Vol 56 (5) ◽  
pp. 345-355 ◽  
Author(s):  
J. Q. J. C. Verberk ◽  
K. J. O'Halloran ◽  
L. A. Hamilton ◽  
J. H. G. Vreeburg ◽  
J. C. van Dijk

2016 ◽  
Vol 27 (3) ◽  
pp. 168-177 ◽  
Author(s):  
Carli Friedman ◽  
Mary C. Rizzolo

Transportation is the most frequently reported problem for people with disabilities. While some people with disabilities have difficulty with limited or no public transportation systems, others have trouble with inaccessible infrastructures and systems. In addition, people with intellectual and developmental disabilities (IDD) often have trouble with many of the skills that navigating transportation requires. Although accessible transportation is crucial for independent living, Medicaid only requires states cover nonemergency medical transportation and does not require transportation related to other aspects necessary for community living such as accessing work, errands, or recreational activities. The purpose of this article is to examine Medicaid Home and Community-Based Services (HCBS) 1915(c) waivers, the largest provider of long-term services and supports for people with IDD, to see how transportation is provided for people with IDD. Our examination of 99 waivers for FY 2013 revealed 58 waivers provided transportation-specific services and 71 waivers provided transportation within another service. The majority of waivers provided transportation for people with IDD through these two means; however, this transportation was often limited to very specific purposes. From our findings, it appears transportation services for people with IDD in waivers need to be expanded to support community access and integration.


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