PATH

Potential Benefits Of In-vehicle Information Systems In A Real Life Freeway Corridor Under Recurring And Incident-induced Congestion

Al-deek, Haitham
1988

Optimal use of existing transportation facilities has become a major priority in congested urban areas. Providing real-time in-vehicle traffic information to drivers is one possibility of achieving this goal. This report documents an initial attempt to ascertain the potential benefits of a real-time in-vehicle traffic information system under recurring and non-recurring congestion conditions.

Design Of Fault Tolerant Control Systems For Ahs

Sastry, S.
Horowitz, R.
Hedrick, K.
1998

This report describes research in the area of fault detection and handling designs used in the longitudinal control system of platooned automated vehicles. Results are presented on experimental testing of the designs. The authors also describe a consistent interface between the fault detection and handling modules and how it was implemented in the SHIFT programming language for the specification of hybrid systems. In addition, the report describes part of the modeling formalism required for the formal verification of safety claims.

Fault Diagnosis for Intra-platoon Communications

Simsek, Hidayet Tunc
Sengupta, Raja
Yovine, Sergio
Eskafi, Farokh
1999

We are interested in studying the fault diagnostics of platooning vehicles. It is understood that a platoon is a string of vehicles with distributed control strategies. Vehicles rely on real-time control data from other vehicles for correct execution of their control laws. A time-driven system is responsible for delivering the control data.

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/

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...

Definition and Measurement of Transportation System Performance

Dahlgren, Joy
1998

Performance measures are needed to inform decisions regarding the overall level of resources to devote to transportation, where to allocate these resources, and how best to use them. The first two types of decision require regular monitoring of the system to reveal problems, which present opportunities for improvement. A few, easily measured indicators of the major benefits and costs of the system are appropriate for this task. For the third type of decision, how to best address a specific problem, a more comprehensive set of benefits and costs must be considered. Indicators must be found...

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...

Organizing For Its: Computer Integrated Transportation Phase 2: Results For Emergency Operations

Lo, H.
Rybinski, H.
1996

This paper extends research on Computer Integrated Transportation (CIT) to emergency operations (EOs). The objectives of the study are to examine EOs in California, identify their role in gathering and using traffic incident information, establish the basis of coordination between EOs and TMCs, identify Intelligent Transportation Systems (ITS) services and technologies that may be beneficial to their operations, and finally compare and contrast similarities and differences between the California emergency operations and the emerging ITS National Architecture. This report covers the...

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...