RTA Joint Self Insurance Fund Expenditures A set of files from the Data Transparency Portal listing RTA's joint self insurance fund expenditures by year. Data is available from 2017 through the current year. An updated version of the most recent file is uploaded onto RTAMS by RTA staff on a monthly basis. Vendor: The name of the expenditure's vendor Date: The date of the expenditure Amount: The monetary value of the expendituree Description: A brief description of the expenditure