These buses were fitted with the powerful Cummins M11-305E engine (10,824cc) and the 3-speed Voith D863.3 automatic transmission. Air-conditioning units were supplied by Denso. In the recent years, the fleet of Tridents' state of maintenance have been left much to be desired. They tend to run on long-haul routes based in the North-East of Singapore.
The Dennis Trident 3 was succeeded by the Transbus/Alexander-Dennis Enviro500, and subsequently Alexander-Dennis Enviro500 MMC which the other operator SMRT Buses decided to purchase.