Traffic Operations and Management

Tools for Operations Planning (TOPL1)

Varaiya, Pravin
2008

TOPL is a suite of tools to (1) specify operational improvements including ramp metering, incident and demand management, auxiliary lanes, traveler information and (2) quickly estimate the benefits that such improvements can realize. TOPL is based on the macroscopic cell transmission model (CTM). Version 1, TOPL1, provides preliminary software packages, a calibrated model of 880N.The website of the TOPL project is http://path.berkeley.edu/topl/(link is external)

Enhancements of ATMIS Using Artificial Intelligence

Liu, Henry X.
Recker, Will
2002

PARAMICS is one of the widely used microscopic traffic simulation program. One important feature of PARAMICSis that PARAMICS allows the user to customize many features of underlying simulation model through a Functional Interface or Application Programming Interface (API). We have developed a library of plug-in modules to enhance the capabilities of PARAMICS simulation through API. These API modules include actuated signal control, time-based ramp meter control, path-based routing, loop data aggregator, performance measures, MYSQL database connection, and network communication through...

Literature Review Report on Benefit/Cost Studies and Evaluations of Transit Management Systems

Jia, Xdong
Sullivan, Edward
2008

This study addresses the benefits and costs of Advanced Public Transportation Systems (APTS) applications in small and medium sized transit agencies using the research test implementation of a small transit oriented Intelligent Transportation System (ITS) on San Luis Obispo Transit as a case study. The Smart Transit System at San Luis Obispo is in a pre-commercialized state and implements the Efficient Development of Advanced Public Transportation Systems (EDAPTS) framework concept (Gerfen, 2001). The system has many potential benefits that will be identified and evaluated from a cost of...

Benchmarking Best Practices of Demand Responsive Transit Systems

Dessouky, Maged
Palmer, Kurt
Abdelmaguid, Tamer
2003

Over the past 10 years, operating expenses for Demand Responsive Transit have more than doubled as demand for this mandated service has expanded. Many advanced technologies and management practices have been proposed and implemented to improve the efficiency of the service; but, evidence for the effectiveness of these actions has been based upon projections or small pilot studies. We present the results of a nationwide study involving 62 large transit agencies and 13 small transit agencies. We evaluate the impact of implemented technologies and practices upon productivity and operating...

Final Report: Mobile Surveillance and Wireless Communication Systems Field Operational Test Volume 3: Appendices A-J Containing Evaluation Data Gathered During the Anaheim Special Event and I-5 Tests

Klein, Lawrence
1999

The Mobile Surveillance and Wireless Communication Systems Field Operational Test(FOT) contained two evaluation tests, the Anaheim Special Event Test and theInterstate-5 (I-5) Test. The Anaheim Special Event Test assessed the ability of thesurveillance trailers to transmit video imagery to a traffic management center in supportof arterial traffic signal control. This test occurred during the Spring of 1997 inconjunction with heavy traffic experienced during hockey playoff games at theArrowhead Pond in Anaheim, CA. The I-5 Test evaluated the ability of the mobilesurveillance and ramp meter...

Evaluation of Coordinated Ramp Metering (CRM) Systems in California

Mauch, Michael
Skabardonis, Alexander
2021

Freeway on-ramp metering (RM) has been extensively used as a traffic control strategy to regulate the entry of the on-ramp vehicles to prevent congestion at the freeway merging areas and preserve the freeway capacity. Benefits of RM include improved freeway travel times, improved travel time reliability, and accident reductions. Fixed-rate ramp metering strategies are based on historical data and implemented by time of day. Traffic responsive RM strategies are based on real time freeway traffic data provided by loop detectors at the vicinity of the on-ramp. Coordinated RM determine the...

Model of Human Vehicle Driving - a Predictive Nonlinear Optimization Approach

Prokop, Günther
2000

When driving a vehicle the human acts as a controller in a highly dynamic environment. Thus human behavior in that control loop has to a large extent been described using control theoretical methodology. We develop a driver model, in which driving is seen as a model predictive control task in such a way that the driver accumulates knowledge about his/her vehicle's handling properties. He/she builds a model out of that knowledge and uses it to predict the vehicle's future reactions on his/her control inputs. The human's behavioral optimization is reflected in the driver model by using that...

Methods to Address Headlight Glare

Christianson, Kent B.
Greenhouse, Daniel S.
Barton, Joseph E.
Chow, Christina
2009

The goal of this project was to design, implement, and validate a computerized Glare Meter Tool that could be used in the field to assess the level of glare from headlights of opposing vehicles in a variety of situations, without relying on subjective reports of observers. Both disability glare and discomfort glare were addressed. The net result is an instrument that is capable of acquiring an image of a scene with glare, then analyzing the image to output a number on the standard, widely-used De Boer Rating Scale for Evaluation of Discomfort Glare, and also an equivalent veiling luminance...

Model Selection And Initial Application Of CONTRAM Model For Evaluating In-vehicle Information Systems

Gardes, Yonnel
Haldors, Bruce
May, Adolf D.
1991

The objectives of this study were to select a traffic assignment and simulation model, apply that model to an integrated freeway/arterial network such as the Smart Corridor in Los Angeles, California, and, using the model, make an initial evaluation of in-vehicle information systems and the applicability of the model.

Ventura/Lompoc Smart Card Demonstration Evaluation: Final Report Volume 1 Technical Performance, User Response, and Institutional Analysis

Giuliano, Genevieve
Moore, II, James E.
Golob, Jacqueline
1999

This report presents evaluation results of the Smart Card Phase III FieldDemonstration. Its purpose is to demonstrate the feasibility of using Smart Cards and othertechnology to provide an integrated fare medium across several transit operators. TheDemonstration took place from May 1995 through June 1997, and it was located in VenturaCounty, California. Participants included seven transit agencies, with the Ventura CountyTransportation Commission acting as the lead local agency. The technology deployed is anintegrated fare transaction and vehicle management/monitoring system, termed...