Showing papers on "Fleet management published in 1992"
TL;DR: In this paper, the authors proposed a modeling and algorithmic approach based on set covering ideas to minimize costs and to ensure an efficient fleet utilization for a LTL motor carrier, where the objective is to minimize the costs and maximize the fleet utilization.
Abstract: The load plan of a LTL motor carrier determines the services it operates and the frequencies it offers. To satisfy the stable part of the demand for transportation, regular driver routes have to be built. These routes must cover the planned services and abide by the laws, regulations and conventions that regulate the drivers' workload, while guaranteeing the timely delivery of goods at the destination terminal. The objective is to minimize costs and to ensure an efficient fleet utilization. We describe the problem, examine its characteristics, and propose a modeling and algorithmic approach based on set covering ideas. Results of an actual application are also presented.
33 citations
01 Jan 1992
20 citations
23 Mar 1992
TL;DR: Special emphasis is placed on some substantial features of the VELOC center, namely the integration of DGPS, a comfortable user interface, and handling of vehicle positions on digital maps.
Abstract: Based on the Global Positioning System (GPS), VELOC (vehicle location) is designed to be a vehicle information system for fleet management adaptable to various user groups, e.g., haulage and delivery companies, and service enterprises with vehicle fleets. The needs of these groups vary with respect to position accuracy, position update rate, and type of communication. The authors describe the requirements, specifications, and performance of VELOC. Special emphasis is placed on some substantial features of the VELOC center, namely the integration of DGPS, a comfortable user interface, and handling of vehicle positions on digital maps. >
8 citations
01 Jan 1992
TL;DR: The employment of computer-aided systems in the planning and operational control of public transit companies forms an important basis for an increase in the attractivity of public transport as well as for an improvement in its efficiency.
Abstract: Nowadays and especially in the future, the employment of computer-aided systems in the planning and operational control of public transit companies forms an important basis for an increase in the attractivity of public transport as well as for an improvement in its efficiency. The areas in which traffic related systems may be applied are very complex, from strategic and operational planning, through operational control and monitoring, up to the analysis of the operational procedures.
7 citations
01 May 1992
TL;DR: In this article, the authors present fleet vehicle data on composition, operating characteristics, and fueling practices, including fleet sizes and composition, fleet vehicle operating characteristics (such as daily/annual miles of travel), fuel efficiency, and refueling practices.
Abstract: As fleets become a larger proportion of the new vehicle population on the road, they have more influence on the characteristics of the total US motor vehicle population. One of the characteristics which fleets are expected to have the most influence on is the overall vehicle fuel economy. In addition, because of the relatively large market share and the high turnover rate of fleet vehicles, fleets have been considered as a useful initial market for alternative fuel vehicles. In order to analyze fleet market potential and likely market penetration of alternative fuel vehicles and to infrastructure requirements for successful operations of these vehicles in the future, information on fleet sizes and composition, fleet vehicle operating characteristics (such as daily/annual miles of travel), fuel efficiency, and refueling practices, is essential. The purpose of this report is to gather and summarize information from the latest data sources available pertaining to fleet vehicles in the US This report presents fleet vehicle data on composition, operating characteristics, and fueling practices. The questions these data are intended to address include: (1) How are fleet vehicles operated? (2) Where are they located? and (3) What are their usual fueling practices? Since a limited number of alternativemore » fuel fleet vehicles are already in use, data on these vehicles are also included in this report. 17 refs.« less
7 citations
01 Oct 1992
TL;DR: The Commercial Vehicle Operations (CVO) segment of the IVHS program is targeted at users of interstate trucks, local delivery vans, buses, taxis, and emergency vehicles as mentioned in this paper.
Abstract: The Commercial Vehicle Operations (CVO) segment of the IVHS program is targeted at users of interstate trucks, local delivery vans, buses, taxis, and emergency vehicles. Specifically, the goals of the CVO program are to improve (a) the efficiency and effectiveness of traffic management and regulatory administration by government; (b) the efficiency and effectiveness of fleet management; (c) safety for operators of commercial vehicles and others affected by them; and (d) driver performance. Although a number of technologies have been developed to support these goals, the human factors aspects of these systems have not been examined.
5 citations
02 Sep 1992
TL;DR: The satellite communication system INMARSAT-C and the satellite navigation system GPS (Global Positioning System) are described and some applications related to them are described.
Abstract: This paper briefly describes the satellite communication system INMARSAT-C and the satellite navigation system GPS (Global Positioning System) and describes some applications related to them. Emphasis is given on a Norwegian pilot project known as the "Sties Project", where a fleet management system using INMARSAT-C and GPS was tested in a real-life transport environment.
5 citations
18 Oct 1992
TL;DR: The author develops a conceptual systems model of transport that identifies three areas in which interdisciplinary systems engineering can contribute to meeting the challenges ahead.
Abstract: The author develops a conceptual systems model of transport Following a decomposition determined by the system's dynamic characteristics, three areas are identified in which interdisciplinary systems engineering can contribute to meeting the challenges ahead: (1) long-term strategic choices with respect to transport infrastructures and conditions affecting transport demand; (2) changes and improvements of transport organization, logistics, etc; and (3) innovations in operational traffic management, advanced vehicle control, fleet management, and real-time traveller information systems >
3 citations
01 Aug 1992
TL;DR: In this article, a branch-and-bound algorithm was proposed for the multicommodity location problem with balancing requirements, which is related to one of the major logistics issues faced by distribution and transportation firms.
Abstract: The multicommodity location problem with balancing requirements is related to one of the major logistics issues faced by distribution and transportation firms : the management of a fleet of vehicles over a medium to long-term planning horizon. The researchers present a branch-and-bound algorithm in which tight bounds are computed by a dual-ascent procedure. They particularly emphasize the development of efficient branching rules and strong fathoming criteria. The algorithm was tested on a wide variety of randomly generated problems and on a large- scale application to the planning of the land operations of a heterogeneous container fleet. Results show that the algorithm is highly efficient and outperforms other existing methods. (A)
2 citations
30 Jun 1992
TL;DR: An architecture for a fleet management system for road transportation companies is proposed for solving problems, which integrates a planning support environment with a mobile data communications system.
Abstract: Looking at the planning department of a road transportation company, several problems can be recognized. Dispatchers do have difficulties with performing their routine administrative tasks and making a trip plan within reasonable time. In this paper, an architecture for a fleet management system for road transportation companies is proposed for solving these problems. This fleet management system integrates a planning support environment with a mobile data communications system. Some experiences and expectations regarding the use of fleet management systems in road transportation business are presented.
2 citations
01 Jan 1992
TL;DR: This article begins with a brief discussion of the objectives and scope of dynamic traffic management, followed by a description of new developments in public transport and traffic management with the emphasis on ICT (information and communication technologies).
Abstract: This article begins with a brief discussion of the objectives and scope of dynamic traffic management. This is followed by a description of new developments in public transport and traffic management, with the emphasis on ICT (information and communication technologies). This includes computer-assisted operation control systems, traffic control systems, driver information systems, and fleet management systems.
TL;DR: A computer program, RISK, based on statistical methods, was developed in the Israel Air Force (IAF) to provide fleet managers with quantitive assessments of the risk associated with each maintenance decision.
Abstract: As operational aircraft accumulate service hours in the Israel Air Force (IAF), cracks begin to appear in structural components. IAF Logistic Center is often requested to determine whether flying can be continued without repair and the associated risk of failure. Those questions and many others cannot be addressed using only the Damage Tolerance Assessment. A computer program, "RISK," based on statistical methods, was developed in the IAF to provide fleet managers with quantitive assessments of the risk associated with each maintenance decision. This paper presents the theoretical background, details of the computer program "RISK" and samples of two risk analyses performed by the IAF using it.
Book•
01 Jan 1992
TL;DR: This conference record of the proceedings of the 3rd Vehicle Navigation and Information Systems Conference held in September 1992 in Oslo contains approximately 100 papers covering a variety of subjects related to IVHS/ RTI.
Abstract: This conference record of the proceedings of the 3rd Vehicle Navigation and Information Systems Conference held in September 1992 in Oslo contains approximately 100 papers covering a variety of subjects related to IVHS/ RTI. Session topics are as follows: driver information, traveler information, traffic monitoring and control routing, navigation, vehicle control, user interfaces, environmental and institutional issues, fleet management and emergency operation road use pricing, localization, system architecture and standards communication techniques, communication systems and services, modeling and simulation - AVI technology, traffic management, modeling for traffic management, geographical databases
Journal Article•
TL;DR: In this paper, a life-cycle benefit/cost model for evaluating the economic implications of fleet conversion and operation on compressed natural gas (CNG) is presented, where the principal benefit in a CNG-fleet operation is the fuel cost savings resulting from the price difference between gasoline/diesel and natural gas.
Abstract: Increased public concern about energy efficiency and air quality has led to a number of state and federal initiatives that examine the use of alternative fuels for motor vehicles. Texas instituted an alternative fuels program for public fleet operations beginning in FY 1991-1992. A life-cycle benefit/cost model for evaluating the economic implications of fleet conversion and operation on compressed natural gas (CNG) is presented. The principal benefit in a CNG-fleet operation is the fuel cost savings resulting from the price difference between gasoline/diesel and natural gas. The costs are classified according to capital infrastructure costs, capital vehicle costs, and operating costs. The benefits and costs are driven by fleet-specific demand parameters, including number and type of vehicles, annual mileage, fuel consumption, and fueling procedures. Sample fleets similar to those of the Texas Department of Transportation are analyzed to identify critical benefit/cost elements in the model. The sample analysis confirms that fuel prices, fueling infrastructure, and vehicle conversion costs are the key factors in the life-cycle economic evaluation.
01 Jan 1992
TL;DR: An overall view of the CRCS concept and representative applications from every area of IVHS is given.
Abstract: When the Automatic Vehicle Identification Concept (AVI) started it was simply an Electronic Tag. Today with a two-way communication capability, programmability and intelligence it has graduated to a full-fledged Close-Range Road/Vehicle Communication System (CRCS). Its applications are numerous from vehicle identification, vehicle location, two-way vehicle communication, to fleet management and the list goes on. This paper, the first in a series of complementary papers that cover the enhanced AVI system/CRCS concept and describe a number of the different applications of this low-cost, high-impact technology that is revolutionizing the road transportation system.
01 Jun 1992
TL;DR: The Aids to Navigation (ATON) Service Force Mix (SFM) 2000 Project is documented in a Project Overview and three separately bound volumes as discussed by the authors, which describes the purpose, approach, analysis, and results of the ATON SFM 2000 Project conducted by the US Coast Guard's office of Navigation Safety and Waterway Services, Short Range Aiders to Navigation Division.
Abstract: : The Aids to Navigation (ATON) Service Force Mix (SFM) 2000 Project is documented in a Project Overview and three separately bound volumes. The Project Overview describes the purpose, approach, analysis, and results of the ATON SFM 2000 Project conducted by the USCG's office of Navigation Safety and Waterway Services, Short Range Aids to Navigation Division. Volume I, 'Development and Application of an Aids to Navigation Service Force Mix Decision Support System-- Final Report', documents the Volpe Center's analysis and development of the proposed replacement buoy tender fleet. The document describes current ATON operations, the concept, development, and operation of the Decision Support System (DSS), the data utilized by the DSS, validation of the DSS, and the proposed service force mix. Volume II, 'Development and Application of the Aids to Navigation Service Force Mix Decision Support System--Aid Assignments and Vessel Summary Reports', contains the DSS outputs associated with the findings of Volume I. Included are maps of the aid assignments for each vessel in both the current and proposed fleets and the associated one-page DSS summary printouts. Volume III, Analysis of Multi-Mission Requirements and Development of Planning Factors for the Replacement Buoy Tender Fleet', documents the USCG's analysis and development of baseline multi-mission requirements of the replacement buoy tender fleet. The document describes buoy tender employment categories, historical tender employment data, the determination of underway hours per underway day, and projected impacts on multi-mission requirements resulting from alternative replacement fleet scenarios.