EVALUATION OF RURAL COVERAGE COUNT DURATION FOR ESTIMATING ANNUAL AVERAGE DAILY TRAFFIC

A STUDY WAS CONDUCTED TO INVESTIGATE THE ACCURACY OF AVERAGE DAILY TRAFFIC (ADT) ESTIMATES AS RELATED TO DURATION OF COVERAGE COUNTS. COVERAGE COUNTS OF 24-HOUR (MONDAY-FRIDAY), 24-HOUR (MONDAY-THURSDAY), 48-HOUR, 5-DAY AND 7-DAY DURATION WERE EVALUATED. FOR RURAL ROADS WITH ADT'S GREATER THAN 500 VEHICLES PER DAY, THE RESULTS INDICATED THAT COEFFICIENTS OF VARIATION FOR 24-HOUR (MONDAY-THURSDAY) COUNTS WERE COMPARABLE TO 48-HOUR COUNTS TAKEN MONDAY THROUGH FRIDAY. AS EXPECTED, COEFFICIENTS OF VARIATION FOR 24-HOUR (MONDAY-FRIDAY) COUNTS WERE MUCH LARGER. FOR RURAL ROADS WITH ADT'S LESS THAN 500 VEHICLES PER DAY, 5- OR 7-DAY COVERAGE COUNTS ARE NECESSARY TO ESTIMATE THE ADT WITHIN PLUS OR MINUS 10 PERCENT. IN ALL BUT A FEW SOUTHERN STATES, THE PRACTICE OF EXCLUDING WINTER MONTHS FROM COVERAGE-COUNTING SCHEDULES APPEARS DESIRABLE. /AUTHOR/

  • Corporate Authors:

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590

    Bureau of Public Roads /US

    400 7th Street, SW
    Washington, DC  United States  20590
  • Authors:
    • Bodle, R R
  • Publication Date: 0

Subject/Index Terms

Filing Info

  • Accession Number: 00227518
  • Record Type: Publication
  • Source Agency: Bureau of Public Roads /US
  • Files: TRIS, USDOT
  • Created Date: Jul 27 1970 12:00AM