OK
Highway "entry/ramp" (srry I really canot find right english word for the oposite of "Exit"

) would be Part I.: Thresshold 3.
Highway is Part II: Driving Thresshold 1, roll Shadowing
Exit is part II.: Thresshold 4(Traffic restriction creates a bit chaos).
The street where Nick is trying to hide is Part III.: Thresshold 3, roll Shadowing
As previously, +1 for every 50% of speed above speed listed