Service 520Edit

Introduced in May 1997. Peak hours one-way service. From Yishun to New Bridge Road in AM peak. From New Bridge Road (Singapore General Hospital) to Yishun interchange in PM peak. No route change. Withdrawn on Sunday 24 Aug 2003.

Service 521Edit

Introduced in Sep 1999. Between Bukit Panjang terminal and World Trade Centre terminal (HarbourFront interchange). Charged normal trunk fares (for adults) during off-peak hours for a promotional period. On Sunday 29 Sep 2002, amended and extended to Woodlands Regional interchange, converted to trunk service and re-numbered service 963.

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