نتایج جستجو برای: road transportation

تعداد نتایج: 123924  

2006
David Meignan Olivier Simonin Abderrafiaa Koukam

Evolution of public road transportation system requires analysis and planning tools to improve the service quality. A wide range of road transportation simulation tools exist with a variety of applications in planning, training and demonstration. However, few simulations take into account the specificities of public transportation. We present in this paper a bus network simulation which models ...

2009
Jeffrey C. Hallo Robert E. Manning

Automobiles and roads are as much of a way of experiencing national parks as they are a means of conveyance. This study examines experiential aspects of transportation on Acadia National Park’s primary scenic road – Ocean Drive. Interviews with vehicle-based road users were conducted to identify indicators to measure and manage experiential quality on Ocean Drive. Also, a survey was conducted t...

Journal: :Optimization Letters 2010
Luciana S. Buriol Michael J. Hirsch Panos M. Pardalos Tania Querido Mauricio G. C. Resende Marcus Ritt

One of the main goals in transportation planning is to achieve solutions for two classical problems, the traffic assignment and toll pricing problems. The traffic assignment problem aims to minimize total travel delay among all travelers. Based on data derived from the first problem, the toll pricing problem determines the set of tolls and corresponding tariffs that would collectively benefit a...

Journal: :Computers & OR 2012
Alejandro Rodríguez Rubén Ruiz

The routing of vehicles on road transportation networks is an area of great importance to transportation planners within scientific literature. This field includes well known and studied problems like traveling salesman problems or TSP or the more realistic asymmetric variant or ATSP, whose applications extend to other areas of transport and operations research. This work studies the effect tha...

2009
Tsutomu Suzuki Yasuhiro Watanabe

The shapes that networks form are thought to be related to the performance of networks during this process. Using reduced travel time as an evaluation criterion, this study examines growth of road and rail transportation networks to determine the differences in growth patterns that are caused by various factors, including speed on transportation network.

2009
Jesus M. de la Garza Mehmet E. Ozbek

Reducing maintenance costs and providing timely improvement of transportation facilities are the major goals of public transportation agencies for the preservation of the existing infrastructure. Throughout the years, some agencies have not been able to accomplish these goals by using the traditional methods of preservation. As a result of this, such agencies considered privatization as an alte...

2010
Carolyn Ann McAndrews Elizabeth Deakin Karen Christensen Mark Hansen

1 Abstract Road Safety in the Context of Urban Development in Sweden and California Road safety is a serious public health issue throughout the world, with more than one million people killed in traffic accidents each year. Despite the severity of its health impacts, the World Health Organization says that traffic safety is a "neglected" topic. Perhaps this is the case in the US, where traffic ...

2008
Ruey L. Cheu Gang Xiang Vladik Kreinovich

In many practical problems, it is desirable to nd an equilibrium. For example, equilibria are important in transportation engineering. Many urban areas suffer from traf c congestion. Intuitively, it may seem that a road expansion (e.g., the opening of a new road) should always improve the trafc conditions. However, in reality, a new road can actually worsen traf c congestion. It is therefore ex...

2006
Lili Yun Keiichi Uchimura K. UCHIMURA

Automated road information extraction enables the ready creation, maintenance, and update of the transportation network databases used for traffic management and automated vehicle navigation. This paper presents a semi-automatic method for road network extraction from high-resolution satellite images. First, we focus on detecting the seed points in candidate road regions using a Kohonen-type se...

2003
Chunguang Zhang

GIS-Based Road Characteristics Analysis Tool Track: Transportation Author(s): Chunguang Zhang Wilbur Smith Associates has developed a GIS based analysis tool in ArcGIS that can provide easy user access to the Georgia Department of Transportation(GDOT) Road Characteristics and other related traffic information. The tool can query and visually display the information at a county wide or road/segm...

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