For the Stairs task, the robot may only ascend, and may not descend. The stairway has a rail on the left side and no rail on the right side.
The Stairs task shall be considered complete when all contact points lie on or above the top step. At the conclusion of the task, the run is complete.
The robot will be lowered to the ground by DARPA officials if needed. If a team requests a Reset during this task, the robot will be returned to the Reset area outside the door.