Road Rules are unlocked after winning one race event
To enter into the Road Rule mode you need to press
, the road sign at the top should change from a green background to a Red
one. The time you are aiming to beat is the OFFLINE
time which is 5.8 seconds.
You dont need a fast car but you DO need a full bar of boost and a nice run up.
Watt Street is located south of the beginning Junkyard.You can press the button to bring up the map and change the Display to Road Rules to see the names of roads.
Here's a picture.
Here's a video demonstration.