Barrier construction

A method for forming a post for a roadway, guard rail or safety barrier system which has a beam and post construction, the post having a cross-section allowing a carriage mounting the beam to the post in use to slide along the post, and at least one engagement means, the at least one engagement means hinders sliding movement of the carriage along the post, the method comprising:

• cutting or slitting a sheet metal blank to form at least one strip between two spaced apart cuts or slits;
• plastically deforming the at least one strip from the sheet metal blank to form the at least one engagement means without separating the at least one strip from the sheet metal blank so that the strip extends outwards from the sheet metal blank;
• and
• then feeding the sheet metal blank through one or more rolls to form the post having the cross-section, the rolls keeping clear of the at least one engagement means during roll forming the post so that the at least one strip extends across the outer face of the post with the two cuts or slits spaced apart in a longitudinal direction of the post, the at least one strip having opposed ends which remain connected to the outer face of the post and a central section which is proud of the outer face of the post which faces, in use, the carriage securing the beam to the post.