Smart Cities

Smart Parking Management Pilot Project: A Bay Area Rapid Transit (BART) District Parking Demonstration

Shaheen, Susan
Rodier, Caroline
Eaken, Amanda M.
2005

In almost every major city in the U.S. and internationally, parking problems are ubiquitous. It is well known that the limited availability of parking contributes to roadway congestion, air pollution, and driver frustration and that the cost of expanding traditional parking capacity is frequently prohibitive. However, less research has addressed the effect of insufficient parking at transit stations on transit use. In the San Francisco Bay Area, parking has recently been at or near capacity at many of the 31 Bay Area Rapid Transit (BART) District stations with parking facilities. Smart...

Field Operational Test of Tools for Facilitating Smart Travel Choices Through Real-Time Information

Zhou, Kun
Wang, Yanqiao
Li, Jingquan
Wachs, Marty
Walker, Joan
Meng, Huadong
Friedman, Jason
Zhang, Wei-Bin
2018

This report documents an effort to assess whetherintegrated multimodal real-time traveler information can encouragetravelers to consider transit as a more viable choice. Under the sponsorship of the California Department of Transportationand in partnership with the Los Angeles Metropolitan Transportation Authority,California PATH developed and field tested Trip2go --a suite of web-based and mobile-phone-based applications incorporating real-time transit and highway condition information. Both objective and surveys were collected to support statistical and modeling analyses to evaluate the...

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.

Smartpath Regulation Layer Implementation: A User's Guide

Carbaugh, Jason
Alvarez, Luis
Chen, Pin-yen
Horowitz, Roberto
1997

This report describes the implementation of the regulation layer maneuvers for the hierarchical architecture in SmartPath. The report contains information regarding the simulation of automated vehicle control laws in the SmartPath environment. It also provides an overview of the set of maneuvers currently implemented.

Enhancements To A Simulation Framework For Analyzing Urban Traffic Networks With Atis/atms

Jayakrishnan, R.
Rathi, U.
Rindt, C.
Vaideeshwaran, G.
1996

This report focuses on the DYNASMART simulation program presents a model that is capable of simulating large urban networks under various Advanced Traffic Management Systems (ATMS) and Advanced Traveler Information Systems (ATIS) strategies. It includes modules for driver responses to information and for capturing the dynamics of the network paths. The research also included the simulation study of a network in Orange County, California, where the benefits from candidate ATIS and ATMS strategies were evaluated. The DYNASMART model has evolved into a flexible tool that can be applied to...

A Planning Methodology For Intelligent Urban Transportation Systems

Kanafani, Adib
Khattak, Asad
Crotty, Melanie
Dahlgren, Joy
1992

This report deals with an introduction to the control aspect of platoon maneuvers in Automated Highway Systems. The different platoon maneuvers include lane changes, merge procedures and split procedures. The first part of the report consists of a review of the existing literature in this area. The survey is split up into the quasi-synchronous and vehicle follower controller methods of approach to the problem. The subsequent sections deal with the mathematical description of the problem with two representations of the system under study, varying only in level of model complexity. The...

Analysis Toward Mitigation of Congestion and Conflicts at Light Rail Grade Crossings and Intersections

Li, Meng
Wu, Guoyuan
Johnston, Scott
Zhang, Wei-Bin
2009

Although many different railroad grade crossing control products are available, the most challenging limitation to traditional grade crossing systems is their inability to deliver consistent warning times in response to varying train speeds and station stops (particularly nearside stops). As a result, rail-roadway crossings often generate conflicts and congestion for motorist traffic and sometimes delay trains.By conducting system level analysis, this project will investigate the interactions and conflicts between urban/suburban rail and cross traffic. The information that is obtained will...

Smart Parking Management Field Test: A Bay Area Rapid Transit (BART) District Parking Demonstration

Shaheen, Susan A., PhD
Rodier, Caroline, PhD
2006

Smart parking management technologies may provide a cost-effective tool to address near-term parking constraints at transit stations. Smart parking management systems have been implemented in numerous European, British, and Japanese cities to more efficiently use parking capacity at transit stations by providing real-time information via changeable message signs to motorists about available parking spaces in park-and-ride lots. This working paper describes the interim results of a smart parking field operational test, which operated at a San Francisco Bay Area Rapid Transit (BART) District...

Rapid Prototyping Of Advanced Driver Interface Systems

Massa, Laura J.
Mendel, Max B.
1993

This report describes a computer environment for rapidly prototyping user interfaces for advanced driver information systems (ADIS).

Effectiveness of California’s High Occupancy Vehicle (HOV) System

Varaiya, Pravin
2007

This is the most extensive empirical evaluation of the effectiveness of California’s HOV system based on data collected from traffic sensors. The evaluation leads to four major conclusions. (1) Since it operates as a single lane freeway, an HOV lane suffers a 20 % capacity loss compared with multi-lane freeways. (2) HOV lanes are either under-utilized or suffer degraded operations. (3) HOV lanes do not measurably increase car-pooling. (4) HOV lanes do not reduce overall congestion in a reasonably well-managed system.