View source for Road Costs Knowledge System (ROCKS), World Bank

= Summary =
The Road Costs Knowledge System (ROCKS) provides an international knowledge system on road work unit cost for road preservation and development activities. It is an institutional memory (database) that collects historical data on road work costs per kilometer or per M² that could ultimately improve the reliability of new cost estimates and mitigate the risk generated by cost overruns. 

= Tables In IFs =
{| class="wikitable"
!Variable
!Definition
!Last IFs Update
!UsedInPreprocessor
|-
|RoadCostConstruction
|Road construction cost per km, average from completed projects
|7/28/2010
|0
|-
|RoadCostConstruction%GDPPC
|Road construction cost per km as a % of GDPPC, average from completed projects
|7/28/2010
|0
|-
|RoadCostMaintenance
|Road maintenance cost per km, average from completed projects
|7/28/2010
|0
|-
|RoadCostMaintenance%GDPPC
|Road maintenance cost per km as a % of GDPPC, average from completed projects
|7/28/2010
|0
|}

= Data Pulling Instructions =

# Navigate to https://archive.doingbusiness.org/en/reports/thematic-reports/road-costs-knowledge-system
# Click Download the updated ROCKS dataset (Excel)

= Data Notes =
The link does come from an archive of the Doing Business report which was discontinued.