Abstract
Balanced improvement of various infrastructures is vital for the infrastructures to work efficiently. It is, however, technically impossible not only to balance them but to know to what extent the balanced improvement of these infrastructures has been achieved due to lack of an integrated indicator for the measurement of the improvement levels of the infrastructures. This study tried for an integrated indicator with which the improvement level of any infrastructure can be measured. The proposed indicator which was obtained through national survey with questionaire represents the questionees demand levels for the infrastructures. The correlation between the public demands measured by the indicator and the objective improvement levels measured by the ad hoc indicators of the infrastructures was shown by the study, which made possible the comparison between the improvement levels of different infrastructures by dint of the proposed indicator. The applicability of this indicator as well as a few factors which affect the indicator were also examined.
