HELP FOR QTR 8 A sensor(Intersection + and T /Disconnected line )

I have a programme using QTR 8A Sonsor line Following my probleme how i can
Adjust my programme to stop in intersection type + or T and deside where he go LEFT or Right and how i can programme for the disconnected line …
Look at the file for the type of line the robot cross…

5line tracker_1_print.pdf (175 KB)