Smart Cities

New Hardware and Software Design of a Field-Deployable Real-Time Laser-Based Non-Intrusive Detection System for Measurement of True Travel Time on the Highway

Cheng, Harry H.
Shaw, Ben
Palen, Joe
Lin, Bin
Hu, Xudong
Chen, Bo
Parks, Jason
2001

A new version of a field-deployable real-time laser-based detection system has been developed using new techniques of electronics and optics. The laser-based non-intrusive detection system uses a laser line that is projected onto the ground as a probe. The reflected light is collected and focused into a photodiode array by an optical system. Vehicle presence is detected based on the absence of reflected laser light. By placing two identical laser/sensor pairs at a known distance apart, the speeds of both the front and rear of a vehicle are measured based on the times when each sensor is...

Cal Poly Pomona EDAPTS Test Deployment Procurement Documentation Package Version 7.0

Jia, Xudong, PhD
Gerfen, Jeff, PhD
2009

This report documents the Bronco Express EDAPTS System procurement process that follows the V-Model. The V-model process led the research team to have a clear understanding of expectations of what the procured system needed to do. It demonstrated a practical procurement and bidding methodology for small/medium transit agencies to acquire their own unique EDAPTS solutions.The procurement was conducted in two phases: 1) the pre-procurement evaluation and definition processes and 2) the Request for Proposal (RFP) process. In the pre-procurement process, the EDAPTS Operations Guidelines that...

ITS Band Roadside to Vehicle Communications in a Highway Setting

Dickey, Susan
Dulmage, Jared
Huang, Ching-Ling
Sengupta, Raja
2010

Researchers investigated the testing and evaluation of radio and communication protocol standards for the 5.9 GHz spectrum that has been approved by the Federal Communications Commission for exclusive transportation use. This spectrum allocation is intended for use as Dedicated Short Range Communications (DSRC) in the context of high-value Intelligent Transportation Systems (ITS) applications. In this report, we summarize the Wireless Access in a Vehicular Environment (WAVE) standardization effort for 5.9 GHz DSRC, its current status, and related issues of the IEEE 802.11p and IEEE 1609...

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...

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.

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...

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.

Transportation Opportunities and Constraints: The Performance of Urban Highway Transportation

Garrison, William L.
1987

This report is the first in a series. The objective of the series is the definition of opportunities for shafp improvements in highway system performance, say, improvements on the order of two or more. Toward that objective, this first report considers system performance as such and the status of the economic and social services enabled by the system.The report presents a first-pass analysis. Revisions are intended as the work continues.