I know LineLeader is not allowed.
LightSensor Array does not have the line tracking features of LineLeader.
My team wants to use LightSensor Array. It just returns the values of each light sensor. My team will write an algorithm to use that data to control the robot movement. Hope that is acceptable. This has been used in previous competitions. The team will be able to speak to the algorithm.
My team is using all Lego Mindstorms ev3 components to build the robot.