Abstract: A traffic coordinator is disclosed which utilizes a master unit and a plurality of secondary units wherein the secondary units are positioned at artery cross streets for controlling the main artery traffic in a coordinated fashion. Both the master unit and secondary units contain microprocessors for calculating parameters utilized in the coordination system. The coordination system may be installed in already existing timer-controlled intersections and serves to provide a highly efficient real time control of artery green bands, offsets and splits to achieve optimum traffic flow.

Abstract: Apparatus and method for controlling a plurality of traffic signal lights at a plurality of intersections along a roadway for operation in an average mode for substantially equally favoring traffic flow in each of two directions.

Abstract: An improved trunking system is provided for ventilation systems in which air or fumes are to be supplied to or exhausted in adverse environments from travelling equipment such as crane cabs and fume hoods in steel works and coke ovens. The trunking is of self-supporting modular construction, each module having a longitudinal opening, a row of metal strips in end to end interengagement extending from at least one side of said opening so as normally to close the latter, the strips being individually located against longitudinal and lateral movement relative to the opening, and so that the pressure differential between the trunking and the ambient atmosphere tends to bias the strips to positions closing the opening. The trunking includes rails to guide a tap which travels along the trunking in sealing relationship thereto and has roller means locally engaging the flap or flaps to open the latter.

Abstract: Window trim assembly of extruded plastic sections for mobile homes and the like, having a rear mounting base member and a front member having shade, drapery or valance mounting formations which is releasably coupled to the base member. The mounting base member has a base panel to be mounted against a building wall and an outwardly projecting mounting rib to be interfitted in a channel recess of the front member and held therein by interlocking teeth. Side jamb sections and a bottom section can be added.