In certain situations, reversible lanes will be contraflow for a portion of the day. Nacogdoches was designated as the north-end terminus of the contraflow/evacuation route. Due to the contraflow setup, non-HGV traffic cannot join the M20 eastbound at junction 8. This procedure, known as contraflow lane reversal, has been employed several times for hurricane evacuations. Government buses use a bus-only contraflow lane on Macquarie St in Hobart, Tasmania, Australia. Others include center-turn overpass, contraflow left, single loop, and single-point urban overpass. The contraflow has been the height of issues however. Contraflow lanes have been installed on some one-way streets specifically for bicycles. Contraflow lanes are generally separated from opposing traffic by plastic pylons or moveable jersey barriers. This proved valuable practice, for the contraflow was implemented much more smoothly in 2005.