One of the aims of the Australian Road Research Board's (ARRB) Pavement Performance Task is to obtain measured responses from full scale pavement test sections, both during construction and under normal service conditions. In conjunction with associated laboratory testing, this information will be used to define the behaviour and performance of asphalt and other road construction materials. This will assist engineers involved in the pavement design and construction area. The pavement test sections described in this report have been monitored and tested at regular intervals since their construction. Although traffic load data is a crucial requirement for pavement evaluation and design, very little data has been collected in the past due to lack of suitable equipment. This report presents the findings of a week long, continuous traffic load survey. The survey was conducted on the South Australian Port Wakefield Road, on the northbound, lane 1 pavement test sections of ARRB's Pavement Performance Task. The survey took place during October 1989 using the Golden River Weigh-in-Motion Device (GRWIMD), which is a fully automatic, highway speed, portable capacitance pad weighing system. The data was then used to compare the accuracy of the three traffic estimation methods given in the AUSTROADS Pavement Design Guide. The results are relevant to users of Weigh-in-Motion equipment, pavement researchers, pavement designers, maintainers and overlayers, and anyone interested in data on pavements. The GRWIMD measurements gave an Average Daily Traffic value of 2464 vehicles with 19 per cent being commercial. The traffic load data showed that over 86 per cent of the axle groups encountered during the survey were of single tyre configuration, with the majority belonging to cars. The single axle, dual tyre groups constituted 6.6 per cent of the axle groups represented, while the tandem axle and triaxle groups made up 4.9 and 2.3 per cent, respectively. The initial daily traffic was estimated to be 678 Equivalent Standard Axles (ESAs), using the AUSTROADS Pavement Design Guide and given the detailed level of traffic load data collected by the GRWIMD. (TRRL)

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  • Accession Number: 00620351
  • Record Type: Publication
  • Source Agency: ARRB
  • ISBN: 0-86910-459-8
  • Report/Paper Numbers: ARR 193
  • Files: ITRD, TRIS, ATRI
  • Created Date: Mar 31 1992 12:00AM