Abstract:This paper addresses a collaborative multi-carrier vehicle routing problem (CMCVRP) where carriers tackle their orders collaboratively to reduce transportation costs. First, a hierarchical heuristics algorithm is proposed to solve the transportation planning problem. This algorithm makes order assignments based on two distance rules and solves the vehicle routing problem with a hybrid genetic algorithm. Second, the profit arising from the coalition is quantified, and an improved Shapley value method is proposed to distribute the profit fairly to individual players. Extensive experiment results showed the effectiveness of the proposed hierarchical heuristics algorithm and confirmed the stability and fairness of the improved Shapley value method.Keywords: collaborative multi-carrier vehicle routing; road transportation; hierarchical heuristics algorithm; Shapley value method
The journal presents innovative theoretical approaches, high-tech concepts, new technological, financing and business management models and tools that can provide higher flexibility, performance and punctuality of trains operating on dedicated lines and in heterogeneous networks. Journal of Rail Transport Planning & Management integrates the expertise from different scientific disciplines as physical planning, transport modelling, traffic analysis, (system) engineering, mathematics, physics, computer science, economics and (transport) policy analysis.
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Bentham OPEN publishes a number of peer-reviewed, Open Access journals. These free-to-view online journals cover all major disciplines of science, medicine, technology and social sciences. Bentham OPEN provides researchers a platform to rapidly publish their research in a good-quality peer-reviewed journal. All peer-reviewed accepted submissions meeting high research and ethical standards are published with free access to all.
Bentham OPEN publishes a number of peer-reviewed, Open Access journals. These free-to-view online journals cover all major disciplines of science, medicine, technology and social sciences. Bentham OPEN provides researchers a platform to rapidly publish their research in a good-quality peer-reviewed journal. All peer-reviewed, accepted submissions meeting high research and ethical standards are published with free access to all.
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PTV Visum is the world's leading transport planning software. It is the standard for macroscopic simulations and macroscopic modelling of transport networks and transport demand, public transport planning, and for the development of transport strategies and solutions. With PTV Visum, you create transportation models that provide insights for long-term strategic planning and short-term operational use.
PTV Visum is the right solution for efficient multimodal transport modeling. With this PTV transport planning software, you can plan transportation in a city or a region, get information on the mode split, analyze all travel processes in detail, and find the best solutions for present and future mobility challenges. Use PTV Visum software to develop a master transportation system plan for the entire region, even when there is little data available.
Support transportation planning futures already during construction. By simulating the effects of construction scenarios and the associated interventions in traffic controls, you can stabilize traffic flow and reduce congestion and emissions.
Traffic Flow Modelling by Femke Kessels pdf free download. This book shows the history of traffic flow modelling from the perspective of modern day applications. Traffic flow models describe how vehicles travel over roads, at which speeds, what the distance is between them, how long they take to travel over a certain road section, etc. Combining the models with other information supports estimations about current and future traffic states. This allows answering questions about the presence and duration of congestion, travel times and travel time delays, emissions and safety assessment. In turn, the information can be used in a variety of applications including transportation planning and traffic control.
Streetmix is primarily available and used as a free and open web service hosted at streetmix.net, but it is also an open source software project supported by free software giant Mozilla that enables anyone to create a locally hosted instance of the service. Unlike the other projects listed in Table 2, Streetmix does not use 2 dimensional (longitude/latitude) data but instead allows the user to interactively edit a 1D street profile, from the edge of buildings on one side to the other side. You can add pavements, cycleways, aesthetic features such as trees and other items to support more sustainable planning policies and designs (Riggs et al. 2016). As discussed in Sect. 5, the combination of the emphasis on participatory design for sustainable futures in Streetmix with the technology for 2D (and even 3D) intiutive editing in CityBound represents a promising possibility for future research and development.
Shifts towards using Complete Streets provide a measure of how approaches to planning and engineering are shifting over time. The focus of road design is no longer about auto-mobility, but creating an overall network that serves all users (LaPlante, McCann, 2011). Complete Street policies are a component of the Centers for Disease Control and Prevention (CDC) transportation recommendations. Complete Streets can enhance physical activity and reduce injury. Setting a Complete Streets policy in place is a foundational step towards improving infrastructure by providing accessible, safe, and connected roadways (CDC, 2010).
Planners are most interested in how things change over a longer period of time, though the question of "are things getting better or worse" is of general interest as well. In the I 75 corridor in central Atlanta, travel times in the afternoon peak period have increased and reliability has decreased between 2001 and 2003 (Figure 2.8). Monitoring of performance trends like this is becoming more common at transportation agencies. As discussed in the next section, performance monitoring is a major emphasis in operations and planning.
Zero-fare public transport services are funded in full by means other than collecting a fare from passengers, normally through heavy subsidy or commercial sponsorship by businesses. Several mid-size European cities and many smaller towns around the world have converted their entire bus networks to zero-fare. The only European capital with free public transport is Tallinn. Local zero-fare shuttles or inner-city loops are far more common than city-wide systems. There are also zero-fare airport circulators and university transportation systems.
Urban space is a precious commodity and public transport utilises it more efficiently than a car dominant society, allowing cities to be built more compactly than if they were dependent on automobile transport.[65] If public transport planning is at the core of urban planning, it will also force cities to be built more compactly to create efficient feeds into the stations and stops of transport.[5][66] This will at the same time allow the creation of centers around the hubs, serving passengers' daily commercial needs and public services. This approach significantly reduces urban sprawl. Public land planning for public transportation can be difficult but it is the State and Regional organizations that are responsible to planning and improving public transportation roads and routes. With public land prices booming, there must be a plan to using the land most efficiently for public transportation in order to create better transportation systems. Inefficient land use and poor planning leads to a decrease in accessibility to jobs, education, and health care.[67]
He is affiliated with the UT Center for Transportation Research as well as the Howard H. Baker Jr. Center for Public Policy, where he works on a broad range of research and educational projects sponsored by state and federal agencies. He teaches courses and conducts research related to intelligent transportation systems, transportation safety, and transportation planning.
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