An apparatus is provided for mounting at least one wheelchair securement devices to a pair of spaced-apart vehicle seat mounting structures each secured to and within an occupant transport vehicle and extending in a direction parallel to a direction of travel of the occupant transport vehicle. The apparatus includes an elongated support member extending transversely along a floor of the occupant transport vehicle between the vehicle seat mounting tracks, anchors coupled to opposite ends of the elongated support member and each releasably attachable to a different one of the vehicle seat mounting structures, and at least one wheelchair securement device secured to the elongated support member between the two anchors. In some embodiments, the at least one wheelchair securement device is slidably mounted to the elongated support member and selectively securable to and along the elongated support member between the two anchors.
