SMRT Mercedes-Benz OC500LE (SMB30Z) – Service 77, in SMRT Buses’ New Livery SMRT Mercedes-Benz OC500LE (SMB30Z) – Service 77, in SMRT Buses’ New Livery SMRT Mercedes-Benz OC500LE (SMB30Z) – Service 77, in SMRT Buses’ New Livery