Transportation engineers and urban planners often report uncertain estimates as precise numbers, and unwarranted trust in the accuracy of these precise numbers can lead to bad transportation and landuse policies. This paper presents data on parking and trip generation rates to illustrate the misuse of precise numbers to report statistically insignificant estimates. Beyond the problem of statist...

D. M. Levinson, Institute of Transportation Studies, University of California at Berkeley, Berkeley, Calif. 94720. Y. Huang, Transportation Planning Division, Maryland National Capital Park and Planning Commission, 8787 Georgia Avenue, Silver Spring, Md. 20910. A transportation planning model that integrates regional and local-area forecasting approaches is developed and applied. Although regio...

Immense levels of data and the complexity of current logistics networks have made software support indispensable. Recurring calculations in network design and transportation planning can be automated with the help of planning software. Furthermore sophisticated algorithms are available to improve planning performance and reduce planning efforts. After a brief introduction of requirements in log...

In this report we present an ontology for Multi-Modal Transportation Planning and Scheduling. We take, as our starting point, the previously developed OZONE scheduling ontology, which provides a general basis for formulating scheduling domain models. We extend this core framework as necessary to capture the essential characteristics and constraints of multi-modal transportation planning and sch...

In this paper, we present the freight transportation planning component of the INWEST project. This system utilizes an evolutionary algorithm with intelligent search operations in order to achieve a high utilization of resources and a minimization of the distance travelled by freight carriers in real-world scenarios. We test our planner rigorously with real-world data and obtain substantial imp...

This paper develops a new decision making method for optimal planning of railway maintenance operations using hybrid Model Predictive Control (MPC). A linear dynamic model is used to describe the evolution of the health condition of a segment of the railway track. The hybrid characteristics arise from the three possible control actions: performing no maintenance, performing corrective maintenan...

This paper examines strategy development processes in surface transportation systems. In the U.S., transportation organizations typically develop strategy through a formal planning process; however, planning is not the only approach for developing strategy. Other approaches include, for example, negotiation, visioning, learning, and consensus-building. Regardless of the particular approach or c...

railway s heduling A omparative study Martin Aronsson1, Markus Bohlin1 and Per Kreuger1 Swedish Institute of Computer S ien e, Box 1263, SE-164 29 Kista, Sweden Martin.Aronsson si s.se, Markus.Bohlin si s.se, Per.Kreuger si s.se Abstra t This paper introdu es two Mixed Integer Linear Programming (MILP) models for railway tra planning using a umulative s heduling onstraint and asso iated prepro ...