This is the Pro Tree. With the "Pro Tree" you stage just like in the Sportsman Tree but the three amber lights illuminate at exactly the same instant and the green follows exactly .4 seconds later. The goal is to anticipate the "green" and be as close to the .4 second interval as possible. Anything under the .4 second interval is a red light. Press the "stage" button, and the yellow pre-stage and stage lights will come on.
Press "Go" when the amber lights illuminate and hope your reaction time (DRT) plus the vehicle reaction time (VRT) is exactly .4 seconds later. You have the right lane.