A method of determining potential damage to pavements caused by heavy truck traffic has been developed by a study group within the Italian Road Federation. The involved the use of special devices to measure the effective weight of vehicle axles in motion and the deformation of the pavement as traffic passes over it. Findings of a sample traffic survey of 23,000 trucks played a major part in developing the method, which was finalized with the use of computer analysis. The rational method will remove much uncertainty and provide data for consideration of increased truck sizes and weights on Italian highways. The industrial and agricultural economy in Italy is based on road transport, even more than in neighboring Countries. Seventy percent of freight traveling more than 300 kilometers do so by truck, and only thirty percent by rail, making the Italian situaton more similar to that in North America than in Europe. The increase in financing costs, salaries, and operating expenses in road freight transport has led to a corresponding increase in axle loadings and in permissible speeds on motorways. On the other hand there has been a progressive reduction in road maintenance expenditures, a slow-down in investments in new infrastructure, and the cancellation or postonement of planned highways. The potential for increased damage by heavier traffic to already deteriorated pavement makes the Italian Road Federation study a valuable design tool.

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Filing Info

  • Accession Number: 00193603
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jun 30 1979 12:00AM