أنشئ حسابًا أو سجّل الدخول للانضمام إلى مجتمعك المهني.
PSI stands for Present Serviceabilty Index and it ranges between5 (best) to0 (worst).
Performance criteria (serviceability indexes). Condition of pavements are rated with a present serviceability index ( PSI ) ranging from 5 (perfect condition ) to 0 (impossible to travel )
