Abstract: A circulating car conveyor has a code-resetting device at each code-reading station in which the resetting elements can be extended into the path of code-setting markers on the sides of the cars in a busy condition of the station, to hold the code-setting markers as the car continues to move past, thereby resetting the markers into an initial position and returning the cars to a starting point. The retaining member is resiliently biased against the code-setting markers or into the path with a force greater than that required to shift the marker along its guide but less than that required to transport the car along the path.