Iowa Speed Study 1973 prepared by Iowa State Highway Commission, July 1973

(1973) Iowa Speed Study 1973 prepared by Iowa State Highway Commission, July 1973. Transportation, Department of

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Abstract

The Iowa State Highway Commission conducted the annual speed check during the month of July, 1973. Prior to 1968 data had been collected semi-annually at each location. In 1968, studies were made at each station during the months of May, July and October, and since that time, on a single annual basis in July. There are twenty-five (25) established speed check points throughout the State. Twenty of these are on Primary highways and five are situated on the Interstate highways (see pages 2 through 4 for locations). All stations are on level, tangent sections of paved rural highways. A two-hour study was conducted at each station, recording only the speeds of "free-flowing" vehicles. Vehicles were classified as either passenger car or commercial. The passenger cars were further identified as local, other Iowa, or foreign, and the commercial vehicles were identified as local or "other". Vehicular speeds were measured by an electronic radar speed meter.