Hello runners. I've spent a bit of time working on autosplitter for this game (PC version at least).
Right now it starts RTA as soon as the game loads into the level, but starts IGT after countdown. There is a setting for IL runs that would start RTA time after countdown as well (disabled by default).
So far it seems to be in sync with the race time displayed in game itself - it treats menuing and race countdown/after finish as loading, but keeps counting during pause and splits at the end of the race.
Just a convenience tool, while it has been consistent for me please still check whether time displayed after the race matches segment time.
Code is avalable on GitHub https://github.com/uspeek/road_rash_autosplitter/blob/main/ROADRASH.asl download the file and add it into Scriptable Auto Splitter (Controls section) in your layout. If moderators are okay with it, I will do a pull request for the autosplitter to be added as default one for the game (the one available in Splits Editor window).
Have a nice day :)