The Travel Demand Index, also known as the TDI, allows Interval International members to determine the travel demand for any specific week within a specific geographical location. If you trade with points, the TDI plays a major role in determining how many points you will need to make an exchange with Interval. If you trade with weeks, the TDI determines the relative value of the week you deposit, as well as the week you wish to exchange into. TDI charts can be found online at IntervalWorld.com
The TDI reflects historical hotel and resort data on occupancy and average daily rates, supplemented by historical relinquishment and redemption data experienced by Interval’s network. This information serves as a good indicator of the demand for accommodations and inbound leisure travel patterns in a given area, and will help you plan your vacation.
Each area in the region is assigned a numerical index for every week of the year, with 100 representing the average inbound leisure travel demand. The higher the figure is above 100, the greater the relative leisure travel demand for the area during that week. Numbers below 100 indicate periods when it may be easier to confirm exchange accommodations and less expensive to reserve other travel services.
