A carriage for use with a roadway, guardrail safety barrier system

A carriage (71.070) for use with a roadway, guard rail or safety barrier system which has a beam and post construction, is disclosed. The carriage (71.070) is adapted to support the beam and mount the beam to the post, and has an inner face which in use faces an outer face of the post. The carriage (71.070) includes a securement receiving means for securing the beam to the carriage (71.070) where the carriage (71.070) is sized and shaped so that in use, during an impact, the carriage (71.070) travels longitudinally relative to the post and does not engage or will minimize engagement with formations on the post. The securement receiving means aligns a securement means located therein with one or more engagement means on the post. The securement means engages with the one or more engagement means during the longitudinal travel to provide resistance to movement of the carriage (71.070) with respect to the post. The inner face includes a recess, groove or channel to avoid contacting formations on the post which hinder sliding movement of the carriage along the post, where the recess, groove or channel has a longitudinal axis generally parallel to a longitudinal axis of the post.