A guide rail system for guiding containers in preselected positions on one or more conveyors. The guide rail system has inner and outer subsystems for locating the containers on the conveyor. The inner subsystem includes one or more offset adjustable point devices, each located at a preselected offset location adjacent to a straight segment of the conveyor and spaced apart from a boundary between it and a curved segment by a preselected distance. The inner subsystem also has one or more first and second transition rail portions, each mounted to said at least one offset adjustable point device, for engaging the containers as they are moved on the straight segment and the curved segment respectively. The first and second transition rail portions are positionable by the offset adjustable point device to locate the containers in the preselected positions.