A familiar add-on to many a layout and available over the years in various forms from a number of manufacturers, Revell may claim the first example of this type of action accessory.  Arriving in Revell's 1958-59 catalog is the Operating Crosing Gate.  Revell's Operating Crossing Gate worked similar to the well-known TYCO item, with a plank between the rails that when depressed by a crossing train trips the arm of the gate down.  The Revell model claims to have working flashing lights.  Revell began selling this item for $5.95 in 1958.

Though at first glance Revell's Engine House appears to only be a kit, according to the 1959-60 catalog there is some action to it.  By use of a tripper track, the doors to the Engine House open automatically as a train approaches.  The catalog states that three of the Engine House doors are functional.  The machine shop with tall smoke stack seen to the right of the Engine House was not connected and could be placed at one's desire about the main kit.  The kit did require assembly and was molded in three colors.  Revell's Engine House included a trio of figures.

Very similar to the Mantua-TYCO item, this Revell Operating Hopper Set was later a part of the Con-Cor line of model trains.  The first appearance in the Revell catalog was the 1959-60 edition.  The Operating Hopper Set sold for $6.95 and included the Burlington Coal Hopper with operating doors; decorated roadbed on inclined grade; platform with sliding sand bin.  Revell's catalog states that track; end bumper; and decals are also included in this set.  The platform reads Revell Sand & Gravel and there is a Champion logo beneath the platform.

Introduced in the 1959-60 Revell catalog, the Track Cleaning Car shares the same shell as the Bunk Car.  The pads lift up and rotate for longer life, according to the description in the catalog.  It is also noted that the car is provided with extra weight to provide better contact with the rails.  The Track Cleaning Car has a retail of $4.98 in 1959 and there is no mention of separately available replacement pads.