Input (grade 12): Transfer to the North South Line is provided at Dhoby Ghaut station, East West Line at Outram Park station and Circle Line at Serangoon and Dhoby Ghaut stations.
Output (grade 11): Transfer to the North South Line is done at Dhoby Ghaut station, East West Line at Outram Park station and Circle Line at Serangoon and Dhoby Ghaut stations.