Sustainability

Evaluation of the ACC Vehicles in Mixed Traffic: Lane Change Effects and Sensitivity Analysis

Ioannou, Petros
Stefanovic, Margareta
2003

Almost every automobile company is producing vehicles with Adaptive Cruise Control (ACC) systems that allow a vehicle to do automatic vehicle following in the same lane. The ACC system is designed for driver comfort and safety and to operate with manually driven vehicles. These characteristics of ACC were found to have beneficial effects on the environment and traffic flow characteristics [1, 2, 3] by acting as filters of a wide class of traffic disturbances. It has been argue that the smooth response of ACC vehicles to high acceleration disturbances or large position errors creates large...

Development of a Heavy-Duty Diesel Modal Emissions and Fuel Consumption Model

Barth, Matthew
Younglove, Theodore
Scora, George
2005

There have been significant improvements in recent years in transportation and emissions modeling, in order to better evaluate transportation operational effects and associated vehicle emissions. In particular, instantaneous or modal emissions models have been developed for a variety of light-duty vehicles. To date, most effort has focused primarily on developing these models for light-duty vehicles with less effort devoted to Heavy-Duty Diesel (HDD) vehicles. Although HDD vehicles currently make up only a fraction of the total vehicle population, they are major contributors to the...

Integrating a Comprehensive Modal Emissions Model into ATMIS Transportation Modeling Frameworks

Barth, Matthew
Malcom, Carrie
Scora, George
2001

Intelligent Transportation Systems (ITS) have generated considerable enthusiasm in the transportation community as a potential means to improve roadway safety, reduce congestion, enhance the mobility of people and goods, and reduce energy consumption and vehicle emissions. In order to estimate these potential benefits, new and improved analytical techniques and simulation models are being developed for ITS. In terms of environmental effects, the University of California, Riverside, College of Engineering-Center for Environmental Research and Technology (CE-CERT) has developed a...

Commercial Motor Vehicle Inspection and Screening Stations: Evaluating Performance from the Perspective of Practitioners

Miller, Mark A.
Garefalakis, Antonios
2009

This report presents the findings of a study of commercial motor vehicle inspection and screening station practices with a focus on the use of various technologies to help address problems related to safety, security, roadway infrastructure, and air quality. A review of industry literature identified the various types of inspection and screening practices that have been and are being implemented including weight and size management, on-board equipment checking, driver-related violations and cargo monitoring, credential checking, and exhaust emissions monitoring. The review also identified...

Evaluation of Incorporating Hybrid Vehicle Use of HOV Lanes

Brownstone, David
Chu, Lianyu
Golob, Tom
Nesamani, K.S.
Recker, Will
2008

This report presents a method to investigate the operational and environmental effects of the policy of allowing qualified single-occupancy hybrid vehicles to use dedicated High-Occupancy Vehicle (HOV)/carpool lanes in California.. The method combines the traditional planning method with microscopic simulation modeling. The planning method is used for demand estimation and analysis and the microscopic traffic simulation modeling method is used for accurate measures of the system. The study employs a microscopic traffic simulation model that is capable of evaluating the HOV/hybrid system...

Lateral Guidance System Requirements Definition

Parsons, Robert E.
Zhang, Wei-Bin
1988

The Institute of Transportation Studies (ITS) is assisting the California Department of Transportation (CALTRANS) to establish and conduct a program of advanced highway technology R&D to obtain better productivity from the States’ most used highway segments. The Program on Advanced Technology for the High-way, PATH, centers on advanced technology opportunities that may contribute to the relief of traffic congestion, with related problems of air pollution and parking; and on energy for transportation, in particular continued use of petroleum based fuels.

Transportation Modeling For The Environment

Barth, Matthew J.
Norbeck, Joseph M.
1994

In this report, the authors describe preliminary research dealing with vehicle emissions associated directly with 1) Automated Highway Systems ( AHS) and 2) ramp metering. In performing this analysis, a power-demand modal emissions model has been integrated with several transportation simulation models in order to quantitatively determine the effects of Intelligent Transportation Systems (ITS) technology on vehicle emissions. For AHS, a steady-state speed/emissions comparison has been conducted between vehicles that are platooned and non-platooned. A comparison has been made between a...

Hot, Congested, Crowded and Diverse: Emerging Research Agendas in Planning

Blanco, H
Alberti, M
Forsyth, A
Krizek, KJ
Rodriguez, DA
Talen, E
Ellis, C
2009
This special issue explores emerging research agendas in planning. It brings together scholars from diverse schools working on new areas of research and application in urban design and planning. Emergent research agendas include both novel areas of research and important shifts in the direction of a research area. The challenge for planning schools is to reflect critically on these changes and develop long-term research agendas that can better position our field in society and academia, and provide a basis from which to assess our academic programmes. The chapters presented in this issue...

Engaging the International Community: Research on Intelligent Transportation Systems (ITS) Applications to Improve Environmental Performance

Shladover, Steven
Barth, Matthew J
Zhang, Wei-Bin
2011

This project was proposed to build on the exposure that the authors of this report have had during the past two years to the thinking of the Japanese and European thought leaders about how Intelligent Transportation System (ITS) can contribute toward meeting environmental goals, especially for reducing CO2.

Longitudinal Model Development For Automated Roadway Vehicles

Mcmahon, Donn H.
Hedrick, J. K.
1990

In today’s society minimizing the use of the roadways is becoming an issue of increasing concern.Many major cities in the US are plagued with such problems as traftic congestion, poor air quality, andsafety problems. To solve these problems research throughout the world is being conducted on the use ofautomated roadways.Currently in the state of California research is being conducted involving several major institutionsas to the feasibility of the automated roadway. The Program on Advanced Technology for the Highway,PATH, aims to increase the capacity of the most used highways, to decrease...