How to get the data of ac(speed,rpm)

[HYCARBON]

I want to make a program need to access the lively data of ac cars.
didn't find the document about the game interface , could anyone give a link about it

 

[Pfalzdriver]

https://www.assettocorsa.net/forum/index.php?threads/shared-memory-reference-25-05-2017.3352/

 

[blekenbleu]

Be aware that SimHub already does this for many games, include AC
https://www.simhubdash.com/