Bus 171: SMRT Alexander Dennis Enviro500 (SG5704H) Bus 171: SMRT Alexander Dennis Enviro500 (SG5704H) Bus 171: SMRT Alexander Dennis Enviro500 (SG5704H)
17 May 2024 - 31 October 2025 Bus Service Diversion for Early Closure of Jurong West Avenue 4 for JRL Works