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Title:

Model for Estimating NOx Emission Reductions After Closing Drive-Throughs

Accession Number:

01126805

Record Type:

Component

Availability:

Transportation Research Board Business Office

500 Fifth Street, NW
Washington, DC 20001 United States

Abstract:

In many areas of the United States, air quality challenges are caused by on-road mobile sources. All non-attainment regions must develop strategies so that the regions’ air quality can attain the National Ambient Air Quality Standards. With implementation of the new, more stringent 75 ppb ozone standard over the next several years, new innovative strategies for meeting air quality goals must be considered. The North Central Texas Council of Governments (NCTCOG) is considering one such measure. NCTCOG is contemplating a restriction on drive-through activity. While the exact policy has not been determined, the magnitude of the potential air quality improvement must be investigated. After determining the magnitude of the improvement, other policy issues such as social and public acceptance and feasibility can be examined. This study develops a methodology for estimating emission benefits associated with drive-thru restrictions by characterizing a drive-thru as an M/M/1 queuing system. Using data collected from a diesel truck during a field experiment, the researchers formulate emissions factors to represent the emissions associated with different vehicular activities (e.g. moving forward, idling, and moving backward) at the facility. The researchers formulate the emissions attributable to each queuing system state. After collecting arrival and service rates during morning (7-10 a.m) and lunch (11 a.m – 2 p.m.) periods at a fast food restaurant, the team estimates drive-thru emissions during each period. At this site, a drive-thru closure will result in a 61% nitrogen oxide (NOx) reduction over the morning hours and a 67% NOx reduction over the lunch period.

Monograph Accession #:

01120148

Report/Paper Numbers:

09-3489

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Mattingly, Stephen P
Sattler, Melanie L
Bhatt, Hetal
Sumitsawan, Sulak
Pala-en, Natchanok
Parikh, Parthen

Pagination:

17p

Publication Date:

2009

Conference:

Transportation Research Board 88th Annual Meeting

Location: Washington DC, United States
Date: 2009-1-11 to 2009-1-15
Sponsors: Transportation Research Board

Media Type:

DVD

Features:

Figures (8) ; References (6) ; Tables (5)

Uncontrolled Terms:

Drive-throughs

Geographic Terms:

Texas

Subject Areas:

Environment; Highways; I15: Environment

Source Data:

Transportation Research Board Annual Meeting 2009 Paper #09-3489

Files:

TRIS, TRB

Created Date:

Jan 30 2009 7:54PM