World Review of Intermodal Transportation Research (6 papers in press)
Intermodal Transportation of Modular Structure Units
by Zhiyuan Liu, Ziyuan Gu, Yu Bai, Ning Zhong
Abstract: With the rapid development of international cooperation in the construction industry, modular construction has been widely promoted in recent years especially for apartments, social housing and schools. This paper aims to address the intermodal transportation plan for modular structure units (MSUs). An overview of MSUs is provided followed by a discussion on different transportation modes. To prevent damages to modules, containers are typically used for maritime shipping. Comparative results show that the 12.1 m (40 ft) hi-cube container is most suited for transporting MSUs. With containerization, an optimal urban transportation plan is proposed consisting of four major steps: identifying the feasible transportation network, establishing the transport cost function, solving the K-shortest paths problem, and assigning MSUs using the logit model.
Keywords: modular construction; logistics; container transportation; intermodal transportation; op-timal transportation plan.
Public-private partnerships in transportation: Lessons learned for the new space era
by Janet Tinoco
Abstract: Entrepreneurial firms in the space sector have accomplished unimaginable feats unheard of just 20 years ago, such as reusable rockets and cargo launches to the International Space Station (ISS). Clearly, the private sector will continue to be a significant participant in the future of the space industry, partnering with governments and nations, to accomplish more with less. Likewise, the public sector must cope with decreased funding and worthy space objectives while balancing cost, risk, and return. Partnering with private enterprise is the best solution to meeting mandated objectives in space program advancement. This paper addresses partnerships in real property assets from the lens of the public sector, particularly with respect to spaceports. Data were collected on public-private partnerships (PPPs) and public-public partnerships (PuPs) in regulated transportation industries from years 1985 through 2014. As these arrangements were analyzed, clear themes emerged that have implications for the new space environment.
Keywords: partnership; space; PPP; PuP; transportation; real property; private; public; government; risk; infrastructure; spaceport.
Including spaceflight in the transportation matrix: The whole is greater than the sum of its parts
by Diane Howard
Abstract: The role of spaceflight is evolving. Innovative systems insert an increasing number of assets into orbital slots for the private and public sectors. Private space transportation systems currently transport cargo to the International Space Station. Private operators will soon be transporting people as well. Despite these strides forward, space transportation is only now gaining traction as the sixth mode. The paper provides policy support for this position, frames the inquiry as to spaceflights relationship to other modes of transportation, performs a plurality analysis, and discusses the feasibility of applying some basic logistics research to help manage these intermodal relationships.
Keywords: Spaceflight; spaceports; synchromodal; pluralism.
Sustainable logistics and supply chain management: A holistic view through the lens of the wicked problem
by Dawn Russell, David Swanson, Magnus Blinge
Abstract: This study takes a holistic perspective of sustainable logistics and supply chain management (SLSCM), exploring the interdependencies among sustainability, financial strength and customer performance in logistics and supply chain management. Firms often struggle to understand when sustainable performance is improving and most importantly, what it costs them in terms of financial and customer performance. The theoretical lens of the wicked problem provides a framework to understand why sustainability performance shows mixed results. Hypotheses that investigate aggregate-level links between sustainable practices of global companies are tested with regression analysis and firm-level data from three widely used databases. Efforts to improve SLSCM can have a positive impact on performance; however, it comes at a price. For example, we find that firms that achieve the highest sustainability recognition have a lower return on assets (ROA), and that a leadership position in sustainability performance requires resources and a long-term view of return on investment.
Keywords: Logistics; Supply Chain Management; Sustainability; Wicked Problem; Dow Jones; Green Brands; Return on Assets; Stakeholders.
Improving the Quality of Service in Public Road Transportation using Real Time Travel Information System
by AKANDE Noah Oluwatobi, Arulogun Oladiran Tayo, Ganiyu Rafiu Adesina, Adeyemo Isiaka Akinkunmi
Abstract: The impact of road public transport in urban transportation system cannot be ignored however the quality of services they provide is not high enough. This has made it unattractive to prospective customers and less competitive to private transport. Also, long waiting time experienced by passengers at bus stops and uncertainty in bus arrival time has greatly reduced public transport ridership. One of the ways of resolving these challenges with a view to increasing the quality of service provided by public transport is the provision of platforms that gives prospective users access to travel information in real time. Therefore, this paper implements an artificial neural network based bus arrival time prediction model and further developed web, mobile and short messaging service travel information platforms that provides travel information to prospective users in real time. The accuracy of the prediction model was evaluated using mean absolute error and mean absolute percentage error while the performance and the impact of the developed platforms were assessed from users perspective through a survey based on the Unified Theory of Acceptance and Use of Technology (UTAUT) model. Results obtained further established the accuracy of the prediction model while the performance of the developed platforms was rated high by its users.
Keywords: arrival time prediction; public transport; quality of service; real time travel information.
BUS STOP NETWORK CATCHMENT ANALYSIS OF INTEGRATED FEEDER SERVICE FOR PUBLIC BUS TRANSIT SYSTEM-A CASE STUDY OF AHMEDABAD CITY
by Manjurali Balya, Rakesh Kumar, Pradip Gundaliya
Abstract: Public Transit plays a vital role in economic development for access to the commuters/travellers to the city centers of the metropolitan cities of developing countries. The proportion of the population being served by the public transit is the primarily based on the bus stop catchment area. Public transit buses can play a primary role in public transportation if they integrate with feeder services. This paper highlights the bus stop catchment analysis of integrated feeder service to the bus stops of BRTS corridor of Ahmedabad city. The primary data for the analysis have collected by the combination of revealed preference and stated preference survey through bus stop and on-board surveys techniques. The SPSS and GIS tools have used to analyze and estimate the access distances of the users/non-users to the bus stops. The distance decay curve results demonstrate that percentage of trips is declining with increasing distances from home to the transit bus stops. The analysis of access distance indicated that the existing average catchment area of all bus stops has 940 m for BRTS users, whereas for non BRTS users have 1998 m which is proposed catchment network of proposed integrated feeder route service which is spatially represented by GIS buffering technique. The output of present research paper is based on case study, but the proposed methodology can apply as a base for the planning of integrated feeder service bus stops catchment of same sized metropolitan cities.
Keywords: Bus Stop Network; Catchment Analysis; Public Bus Transit System; Distance Decay Function; Geographic Information System.