Bus 857 – Tower Transit Alexander Dennis Enviro500 (SMB3573D) Bus 857 – Tower Transit Alexander Dennis Enviro500 (SMB3573D) Bus 857 – Tower Transit Alexander Dennis Enviro500 (SMB3573D)
17 May 2024 - 31 October 2025 Bus Service Diversion for Early Closure of Jurong West Avenue 4 for JRL Works