IDA has invested more than $2 billion since 1991 to address the country’s infrastructure gap, partly through the Road Sector Development Program (RSDP). IDA helped build capacity and establish a dedicated road fund for financing maintenance. Working in partnership with other donors, including the European Commission, Germany, Japan, Nordic countries and the United Kingdom, IDA helped increase both the size and quality of Ethiopia’s road network from under 20,000 km in 1991 to over 100,000 km in 2015. Under the CPF, the World Bank continues supporting improvements in transport infrastructure and road connectivity to reduce travel times and improve connectivity between markets and secondary cities.
For a person working for a wage, their source of income is their job, or their labor (aka their time that they sell to someone). But you can own a house, and rent it out, and when your renters pay you renter every month, the source of that income check is your rental property, or your house. It would just be called rental income. If you have money in the bank in an account that pays interest, those interest payments are another source of income. We can say the source is interest payments, or we can identify the asset that is generating rent, and say your money in the bank that is generating “rent” (aka interest) is your source of income.