Modeling

Assessment of Traffic Simulation Models : Final Report

Skabardonis, Alexander
University of California, Berkeley
Washington State Department of Transportation
1999

This report describes a study which focused on the selection and application of traffic simulation models. The models were evaluated for: capabilities and features, input data requirements, output options, relationship with traditional planning and operational analysis tools, and modeling effort and costs.

Assessing the Traffic Impacts of Transportation and Land Development Scenarios

Deakin, E A
Skabardonis, A
Walukas, E
Transportation Studies
1985

This paper demonstrates the use of the transyt model in assessing the traffic impacts of transportation and land development scenarios. Using the downtown area of the city of Berkeley as a case example, the effects of overall traffic growth, project-specific traffic increases, alternative parking policies, tsm programs, and street and intersection design changes are explored. The results show that once transyt is calibrated for an area, it can be applied relatively quickly and inexpensively as a sketch-planning tool. (a) (Author/TRRL)

Application of Simulation to Evaluate the Operation of Major Freeway Weaving Sections

Skabardonis, A
Cassidy, M
May, A D
Cohen, S
1989

This paper describes the findings from the application of the INTRAS microscopic simulation model to evaluate the traffic performance at major freeway weaving sections. The work performed is part of an ongoing research project to develop improved weaving analysis procedures that are particularly applicable to California conditions. The INTRAS model was modified to predict the speeds of weaving and nonweaving vehicles and applied on eight major freeway weaving sections for a range of traffic conditions at each site. Good agreement was obtained between the measured and predicted values....

Analysis of Freeway Improvements for Express Bus Service

Cherry, Christopher R
Tang, Eric
Deakin, Elizabeth
Skabardonis, Alexander
2005

In many urban areas, high-occupancy vehicle (HOV) lanes have been provided to permit carpools and express buses to bypass congestion and offer a significant travel time advantage to commuters willing to share a ride or take transit. In many locations, however, HOV lanes are incomplete because of difficulties in securing right-of-way or funding. In other locations, because existing HOV lanes are underutilized, express buses are undersubscribed, or both, questions about their value arise. In this research it is shown how a PARAMICS microscopic traffic simulation model can be used to analyze...

The Economics of Traffic Information: A State-of-the-Art Report

Malchow, M.
Kanafani, A.
Varaiya, P.
1996

This working paper is a preliminary review of the state of the art in the study of theeconomics of traffic information. The focus is on the different methods used to model thedecision process of drivers in a traffic system, and on the effect of traffic information on thisprocess. In addition, the review includes the characterization of information in terms of contentand accuracy. The purpose is to develop an understanding of the market for different types oftraffic information. The paper also includes some preliminary models that can be used to modelthe demand and supply of traffic...

Longitudinal Control Development for IVHS Fully Automated and Semi-Automated Systems - Phase 1

Hedrick, J. K.
Mcmahnon, D.
Swaroop, D.
Garg, V.
Gerdes, J.
Maciuca, D.
Blackman, T.
Yip, P.
1995

This report addresses some of the important longitudinal vehicle modeling and control issues of Advanced Vehicle Control Systems (AVCS) such as brake dynamic model development and validation, decentralized longitudinal control algorithms which guarantee the stability of the entire platoon and fault detection and isolation in the longitudinal vehicle dynamics of controlled vehicles.

Longitudinal Control of a Platoon of Vehicles. III, Nonlinear Model

Sheikholeslam, Shahab
Desoer, Charles A.
1990

This paper presents a systematic analysis of a longitudinal control law for a platoon of non-identical vehicles using a non-linear model for the vehicle dynamics.

Traffic Analysis Toolbox Volume III: Guidelines for Applying Traffic Microsimulation Modeling Software

Dowling, Richard
Skabardonis, Alexander
Alexiadis, Vassili
Dowling Associates Incorporated
Federal Highway Administration
2004

This report describes a process and acts as guidelines for the recommended use of traffic microsimulation software in transportation analyses. The seven-step process presented in these guidelines highlights the aspects of microsimulation analysis from project start to project completion. The seven steps in the process include: (1) scope project, (2) data collection, (3) base model development, (4) error checking, (5) compare model MOEs to field data (and adjust model parameters),( 6) alternatives analysis, and (7) final report. Each step is described in detail and an example problem...

Simulation of Transit Signal Priority Using the NTCIP Architecture

Liu, Hongchao
Skabardonis, Alexander
Li, Meng
2006

Transit Signal Priority (TSP) is an important element of Bus Rapid Transit (BRT) that involves coordinated efforts between transit vehicle detection systems, traffic signal control systems, and communication technologies. Successful deployment of TSP requires thorough laboratory evaluation through simulation before field implementation. This paper presents the development and application of a simulation model specifically designed for the design and evaluation of TSP systems. The proposed simulation tool models in detail all the TSP components in accordance with the National Transportation...

A Competitive, Charter Air-service Planning Model for Student Athlete Travel

Gupta, Gautam
Goodchild, Anne
Hansen, Mark
2011

This paper presents a model for planning an air charter service for pre-scheduled group travel. This model is used to investigate the competitiveness of such an enterprise for student athlete travel in conference sports. The relevant demand subset to be served by a limited charter fleet is identified through a comparison with existing scheduled travel options. Further, the routing and scheduling of the charter aircraft is performed within the same framework. Through this modeling a method for formulating and accommodating continuous time windows and competitive market dynamics in strategic...