There was also a link from the ROF railway line to the Inverclyde line. The factory had transfer sidings connected to both the up and down lines. The ROF line, which was never electrified, ran on to the transfer sidings a few yards west from the Bishopton station. It crossed Ingleston Road via a gated level crossing, entering the ROF site from the north. The link remained in-situ up until closure of the factory, but was little used after the early 1990s.