http://www.rbracing-rsr.com/

This is the Sportsman Tree. With the "Sportsman Tree" you stage just like in the Pro Tree but the three amber lights and the green light "march down" in sequence at .500 second intervals. The goal is to anticipate the "green" and be as close to the .500 second interval as possible. Anything under the .500 second interval is a red light. Press the "stage" button, and the yellow pre-stage and stage lights will come on.

Press "Go" after the last amber light and hope your reaction time (DRT) plus the vehicle reaction time (VRT) is exactly .500 seconds later. You have the right lane.