Table 14: Calculation and scoring method according to assessment items.

IndexSubindexAssessment elementStandardScore

Traffic environment ( )Crosswalks ( )Number of crosswalk in section/section lengthUnder 10%≤40
10%–20%≤60
20%–30%≤80
Above 30%≤100
Traffic volume ( )ADT per laneLower traffic≤40
Midtraffic≤60
Heavier traffic≤100
Heavy vehicle ratio ( )Heavy vehicle/traffic volumeBelow 36%Interpolation
Above 36%100