00335166

Component

http://onlinepubs.trb.org...s/trr/1980/789/789-002.pdf

https://scholar.google.co...mena&publication_year=1981

A relatively simple empirical equation is presented that reasonably approximates the relationship between mesoscale carbon monoxide (CO) concentrations, areal vehicular CO emissions rates, and the meteorological factors of wind speed and mixing height. The approximation is an extension of rollback modeling and was derived from aerometrid data measured at a major urban area in Virginia. A similar equation has been found valid for relatively limited data measured at another major urban area, which indicates that an approximation of this type, although area specific, has wide applicability. Transportation planners can use such an approximation in conjunction with a grid inventory of area vehicular CO emissions to obtain an areal profile of mesoscale CO concentrations. Such an approximation would be preferable to the complex and potentially more-accurate diffusion models when reliable input data are not available, which is often the case. It could be used by air-quality planners involved in project-level analyses to estimate the existing worst-case background levels of CO at a proposed urban highway site. (Author)

Publication of this paper sponsored by Committee on Transportation and Air Quality. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.

01411606

pp 5-14

1981

Transportation Research Record

0309032032

Print

Figures (9) ; Maps (2) ; References (8) ; Tables (4)

Carbon monoxide; Concentration (Chemistry); Equations; Exhaust gases; Highway planning; Pollutants; Urban areas

Concentration

Highways; Operations and Traffic Management; Vehicles and Equipment

TRIS, TRB

Oct 28 1981 12:00AM

• COMPARISON OF LEQ(H) AND LDN AS DESCRIPTORS OF HIGHWAY TRAFFIC NOISE
• COMPARISON OF SOUND-LEVEL PREDICTIONS BY SNAP 1.0 AND STAMINA 1.0 HIGHWAY TRAFFIC-NOISE-PREDICTION PROGRAMS
• EVALUATION OF THE FEDERAL HIGHWAY ADMINISTRATION PROCEDURE FOR HIGHWAY TRAFFIC NOISE PREDICTION
• EVOLUTION OF ENVIRONMENTAL ANALYSIS AT THE STATE TRANSPORTATION DEPARTMENT LEVEL
• INVENTORY AND PRIORITY RATING OF POTENTIAL TYPE II NOISE-ABATEMENT SITES IN GEORGIA
• NOISE ABATEMENT AND PUBLIC POLICY DECISIONS: A CASE STUDY--I-440 IN NASHVILLE
• ROLE OF PLANT MATERIALS IN TRAFFIC NOISE CONTROL
• SIMPLIFIED TRAFFIC-NOISE-PREDICTION MODEL FOR TRANSPORTATION AND LAND USE PLANNING
• STAMINA 1.0 EXPERIENCES ON THE DULLES ACCESS HIGHWAY EXTENSION PROJECT