> For the complete documentation index, see [llms.txt](https://roadrunr-protocol.gitbook.io/roadrunr-documentation/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://roadrunr-protocol.gitbook.io/roadrunr-documentation/tokenomics/usdsdt-token.md).

# $SDT Token

The $SDT, or **Safe Driving Token**, supply is unlimited. Drivers earn $SDT when they drive and share trips on ROADRUNR protocol. $SDT distribution happens at the end of each day (00:00 UTC) and $SDT is rewarded based on distance driven by the user that day and other factors of NFT as discussed above. The $SDT is burned for:

1. NFT Minting 
2. NFT repair 
3. Player Level-up 
4. NFT Leasing / renting 
5. Event participation

Almost all in-game activities (bar some requiring $CAR tokens) will require burning of $SDT. There is no direct conversion/peg between $CAR and $SDT, the prices of these two tokens will be independent of one another purely based on market forces. One can be converted into another based on the prevailing $CAR/$SDT market rate.