The green highlighted sections represent processing activity. The bright green line indicates the main process flow for completing each major action point (braking, turning, apex, etc.) when driving around the track, and the dark green line represents the ‘evaluation’ sub process.
The image gets a bit fuzzy when zoomed in, so if you’re interested in the details, I’ve included a PDF version:
SOS_Intellectual_Driving_(Novice Model)_Final_v2 (true flow)