The paper also compares different ways of calculating the RAI. Special attention is given to an innovative way in which the RAI was calculated in Timor-Leste. This was done within the framework of the R4D program which is implemented since 2012. R4D is the Government of Timor-Leste’s main program for the development of rural roads in the country. It is being implemented with financial support from the Australian Government and technical assistance from the International Labour Organization (ILO).