The Florida Department of Transportation (FDOT) air quality screening test is a graphical procedure in which an intersection in a project alternative is analyzed to determine if there are any possible air quality impacts at nearby receptors. The analyst enters the year, the traffic approach volume and the speed and follows the graphical procedure to result in a "critical distance". If the critical distance is closer to the road than the nearest reasonable receptor, then the intersection passes the screening test. If the critical distance is further than the distance to the nearest receptor then the project fails the screening test. Because the screening test is based on a number of very conservative assumptions, if the project fails the screening test then it only means that more detailed computer modeling is required, not that the project will harm air quality. The screening test was updated to include MOBILE5A emission factors (EFs) for various years and vehicle speeds. The dispersion model CALINE3 was run with those EFs for various traffic volumes to model the CO concentrations near an at-grade four-way intersection. Two cases were considered: urban and rural. Assumptions were made to define conservative, "worst case" scenarios. The curves were extended to the year 2030. An interactive computer program was written to implement the screening test. It is runable on most personal computers which meet the program requirements (DOS 3.3 or higher, a CGA or higher screen, and a dot matrix or laser printer).

  • Corporate Authors:

    University of Central Florida, Orlando

    Department of Civil and Environmental Engineering
    P.O. Box 162450
    Orlando, FL  United States  32816-2450

    Florida Department of Transportation

    Haydon Burns Building, 605 Suwanee Street
    Tallahassee, FL  United States  32301

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Cooper, C D
  • Publication Date: 1993-10


  • English

Media Info

  • Features: Appendices; Figures; Tables;
  • Pagination: 36 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00667731
  • Record Type: Publication
  • Report/Paper Numbers: State PN 99700-7103-010, WPI 0510656
  • Contract Numbers: C-4593
  • Created Date: Oct 24 1994 12:00AM