PATH

Assessment of Service Integration Practices for Public Transportation: Review of the Literature

Miller, Mark A.
2004

This report documents a review of the literature of transit service integration policies. It is the initial task of a project whose objective is to understand service integration policies and practices that transit agencies have employed and the benefits such policies have brought. Studies have shown that ongoing coordination and integration of transit services can improve public transportation system connectivity and reliability, and help make transit a more attractive travel mode alternative to the car. Findings from the literature shed light on several topics, including how service...

How the Reconstruction of I-880 Affected Travel Behavior

Dahlgren, Joy
2001

One of the concerns that people have about expanding highway capacity is that this will motivate more people to travel, so that the highway will soon become as congested as before. This is also a concern with automated vehicles, which would have the effect of increasing capacity. This so-called induced travel has been a subject of much debate and study in recent years. One of the problems confounding studies of this subject has been that capacity increases are generally motivated by recent or expected development, which generates increased travel and can even increase per capita travel if...

Validation of Daganzo's Behavioral Theory of Mult-Lane Traffic Flow: Interim Report

Banks, James
2002

This report documents results of work completed at San Diego State University during the first year of a research project intended to validate a behavioral traffic-flow theory recently proposed by Daganzo (1,2). Work on this project completed at the University of California at Berkeley will be documented in a separate interim report. In the idealized form developed so far, Daganzo’s theory assumes two types of drivers, aggressive (rabbits) and timid (slugs), and two lane groups, shoulder lanes and passing lanes. In free flow, rabbits travel faster than slugs and the two groups are...

Testing Daganzo's Behavioral Theory for Multi-lane Freeway Traffic

Chung, Koohong
Cassidy, Michael
2002

This report describes the detailed, albeit still preliminary study of traffic on stretches of two different freeways. Both were plagued by merge bottlenecks. The first of these sites is the Gardiner Expressway, a 3.3 km long freeway stretch in Toronto, Canada. The site was selected because of its suitable geometry (i.e. its merge bottleneck) and its well-tuned loop detectors located upstream and downstream of the bottleneck. The site thus provided for an exceptionally good “laboratory” for testing Daganzo’s behavior theory of drivers (Daganzo, 1999). It turns out that the observations from...

Using Technology to Improve Transportation Services

Garrison, William L.
1988

Today's transportation systems are well deployed in the developed nations, and they and their supporting activities are technologically and institutionally mature. This situation is exceptional in the perspective of the last 200 years of transportation development, during which new systems were innovated and wave after wave of construction undertaken.An examination of the ways technologies were shaped and adopted in the past reveals that today's view of technology-based opportunities is also exceptional. Consistent with system maturity, the search for improvements is focused on marginal...

Evaluation of UC Davis Long-Range Transportation, Land-Use, and Housing Plans: Examining the Potential for Innovative Mobility Pilot Projects

Finson, Rachel S.
Shaheen, Susan A.
2001

At present, the City of Davis, surrounding communities, and the UC Davis campus are struggling with many of the same transportation problems that plague larger urban centers including increasing traffic, limited parking, and challenges to effective operation of the public transit system. The campus is expecting to grow by 6,000 students in the next ten years (plus approximately 3,000 faculty and staff) and is developing a Long-Range Development Plan (LRDP) that will serve to guide this growth. This plan will include housing, traffic control, parking, alternative transportation modes, and...

Highway Electrification: An Exploration of Energy Supply Implications

Wang, Quanlu
Sperling, Daniel
1987

The objective of this preliminary report is to explore the energy supply opportunities and implications of electrifying highways. An important assumption in this report is that the technology and general cost structure for generating and storing electricity does not change significantly in the future. In other words, we ignore the possible use of super conductive materials to store electricity during off-peak times, which, if feasible, would greatly reduce average electricity costs. A future report will examine the opportunities and implications of breakthroughs in superconductivity.The...

Whence Induced Demand: How Access Affects Activity

Levinson, David
Kanchi, Seshasai
2000

Additional highway capacity, by increasing travel speed, affects the individual share of time within a 24-hour budget allocated to various activities (time spent at and traveling to home, shop, work and other), some activities will be undertaken more, others less. This paper extends previous research that identified and quantified induced demand in terms of vehicle miles traveled, by considering questions of what type of demand is induced and which activities are consequently reduced. This paper uses the 1990 and 1995 Nationwide Personal Transportation Survey and Federal Highway...

Summary of Observations on July 1993 Study Tour to Japan

Orne, Donald E.
Shladover, Steven E.
1993

The purpose of this report is to document some lessons learned during the July 3-16, 1993 tour of Japan and Intelligent Vehicles ’93 Symposium attendance by PATH Director Donald E. Orne and Deputy Director/AVCS Program Manager Steven E. Shladover.The tour was arranged by PATH through Japanese contacts to coincide with the Intelligent Vehicles ’93 conference. Most of the contacts were known to PATH either from introductions at various conferences or by visits to PATH offices.Special attention was given by Orne and Shladover to consider the extent to which interaction with government,...

Los Angeles Fot Spread Spectrum Radio Traffic Signal Interconnect Evaluation Task: Final Report On Full Deployment

Li, Victor O. K.
Sengodan, Senthil
Chan, Tat-keung Ken
Zhuge, Lei
1998

This report presents the results of an evaluation of project in which spread spectrum radio networks (SSRN) were used for traffic monitoring and control in the City of Los Angeles. The focus of SSRN is to reduce construction costs, construction time and future plant maintenance costs. A field operational test was conducted to test and evaluate the applicability of SSRN communications in traffic control.