I N F R A R O A D P A V E D P C N T r , t = 100 1 + e − ( − 1.022 + 0.833 ∗ G D P P C P r , t + 0.756 ∗ P O P r , t − 0.726 ∗ L A N D A R E A r , t − 0.267 ∗ I N F R A R O A D r , t ) {\displaystyle INFRAROADPAVEDPCNT_{r,t}={\frac {100}{1+e^{-(-1.022+0.833*GDPPCP_{r,t}+0.756*POP_{r,t}-0.726*LANDAREA_{r,t}-0.267*INFRAROAD_{r,t}})}}}
