Bus 991B – SMRT Buses MAN A95 (SG5874A) Bus 991B – SMRT Buses MAN A95 (SG5874A) Bus 991B – SMRT Buses MAN A95 (SG5874A)
17 May 2024 - 31 October 2025 Bus Service Diversion for Early Closure of Jurong West Avenue 4 for JRL Works