Induced Demand: Traffic Diversion vs. Generation and Related Issues (Completed 1996)

Performer(s): Center for Transportation and the Environment (CTE) at N.C. State University
Sponsor(s): FHWA

To order:

Lois J. Widmer. CTE, Information Services Dept., Campus Box 8601, Raleigh, NC 27695-8601;
Tel: 919-515-8581; Fax: 919-515-8898; Email: lwidmer@unity.ncsu.edu.

Abstract

The Center for Transportation and the Environment (CTE) performed a literature review on induced travel demand in September 1996. Abstracts from approximately 50 research articles from the United States and abroad are included in this report. Special Report 245 “Expanding Metropolitan Highways: Implications for Air Quality and Energy Use” published by the Transportation Research Board in 1995, is also cited as an important resource document.

Innovations in Transportation and Air Quality—Twelve Exemplary Projects (Completed 1996)

Performer(s): Federal Transit Admin. (FTA)
Sponsor(s): FHWA

To order:

Adrica Coates. FHWA, HEPN-1, 400 Seventh St., SW., Washington, DC 20590;
Tel: 202-366-6724; Fax: 202-366-3409; Email: Adrica.coates@fhwa.dot.gov;
Order Nos.: FHWA-PD-96-016; NTIS No. PB96183280.

Abstract

The booklet describes 12 exemplary projects funded under the Congestion Mitigation and Air Quality Improvement (CMAQ) Program through its “flexible funding” program of transferring a greater percentage of funds to transit improvements. These projects were showcased to stimulate further innovation and creativity in addressing air quality problems through transportation measures. A diverse group of projects are described, ranging from intermodal connections to freight and goods movement to parking management and pedestrian access. While the projects deal with different transportation issues, they all yield air quality and other benefits, such as congestion relief, economic development, energy conservation, etc. Contact persons are listed for further information in the highlighted projects.

Intelligent Transportation Systems Impact on the Environment (Completed 1997)

Performer(s): Center for Transportation and the Environment (CTE), N.C. State University
Sponsor(s): FHWA

To order:

Lois J. Widmer. CTE, Information Services Dept., Campus Box 8601, Raleigh, NC 27695-8601;
Tel: 919-515-8581; Fax: 919-515-8898; Email: lwidmer@unity.ncsu.edu.

Abstract

The Center for Transportation and the Environment performed a literature review for FHWA on intelligent transportation systems (ITS) and their impact on the environment. Approximately 50 journal articles are summarized in the form of abstracts. Two articles include discussion of the ITS-related services that were used during the Olympic Games in Atlanta, GA, in 1996. Most of the assessments related to ITS impacts on reductions of criteria pollutants were found to be very preliminary, as the current state of practice for modeling is not sufficient to quantitatively assess the effects of traffic flow smoothing, a common effect among ITS technologies.