As of October 2023, three travel classes are offered on KTM Intercity services: During festive seasons, special overnight trains are operated.

These include: Shuttle Tebrau is a cross-border train service between Johor Bahru, Malaysia and Woodlands, Singapore.

When travelling from Johor Bahru to Woodlands, passengers will clear Malaysian immigration at JB Sentral station before boarding the train.

Photography and videography is not permitted at the immigration control section of JB Sentral station and at Woodlands Train Checkpoint, as both facilities are designated as restricted areas.

Stations in bold are stops of the current Southern Express route, and will be replaced with ETS trains once services commences in 2023.