Abstract:
TRAFFIC SURVEYS WILL BE NEEDED TO APPRAISE THE POSTWAR USE OF RURAL ROADS. MOST OF THE TRAFFIC COUNTING WORK, PARTICULARLY ON LOW VOLUME ROADS, IS EXPECTED TO BE DONE WITH MACHINES WHICH DO NOT RECORD THE TRAFFIC BY THE HOUR. SOME CRITERIA ARE NEEDED FOR EFFICIENT SCHEDULING OF SUCH COUNTS. PRACTICAL CONSIDERATIONS, INDICATED BY EXPERIENCE, DETERMINE THE MINIMUM DURATION OF A COUNT TO BE 24 HR, OR IF LONGER, THEN IN 24-HOUR MULTIPLES. COVERAGE AND CONTROL STATION COUNTS ARE DISCUSSED. COVERAGE COUNTS ARE DEFINED AS SINGLE OBSERVATIONS WHICH THROUGH THE APPLICATION OF FACTORS CAN BE EXPANDED TO THE ANNUAL AVERAGE DAILY TRAFFIC. CONTROL COUNTS ARE DEFINED AS A SYSTEM OF OBSERVATIONS FROM WHICH EXPANSION FACTORS CAN BE DERIVED FOR APPLICATION TO COVERAGE COUNTS. THE PREWAR DATA FROM AUTOMATIC TRAFFIC RECORDERS AT PERMANENT LOCATIONS WERE UTILIZED. TEN STATIONS WITH LOWEST VOLUMES IN THE NORTHERN STATES AND SIMILARLY TEN STATIONS IN THE SOUTHERN STATES WERE SELECTED. THE APPLICATION OF THE METHOD OF COEFFICIENTS OF VARIATION WHICH OFFER A MEASURE OF RELATIVE DISPERSION ENABLED THE COMPARISON OF STATIONS WITH DIFFERENT TRAFFIC VOLUMES. THE STUDY WAS DIVIDED INTO TWO PARTS. /AUTHOR/
Supplemental Notes:
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