Trr No. 1293 Pavement Design, Management, And Performance, pp. 72-85
. The results indicate that discrepancies among agencies can be large; however, a few agencies reached good agreement in manv cases. The sources of svstematic errors and wavs to reduce them are discussed. Finally, an expert system approach that uses a specific analyst's knowledge to prepare input for the mechanistic backcalculation program and to interpret results is described