Abstract: The invention relates to a delivery and retrieval device for road cones. In a preferred embodiment the device comprises a track for mounting across the rear of a vehicle, a tower mounted to slide on the track, means such as motor to move the tower on the track, a conveyor to deliver road cones from a roadway to the base of the tower or to deliver road cones from the base to the roadway, a conveyor platform powered to move from a first height position at the base of the tower and adjacent one end of the conveyor to a second height position up the tower, and a handling mechanism to support a stack of road cones above the platform. In use the device collects and deposits cones from/to the roadway, in such a way as top enable a portion of a carriageway to be selectively closed by forming a ‘taper’. The invention thus overcomes problems associated with personnel having to walk behind a vehicle in order to place cones in this arrangement.