SA Road Safety | ARMCO

ABC terminal
The steel 'directional' breakaway posts are designed using a new innovative concept. The lower post, having an 'H' section, is driven into the ground. The upper post, with its 'U' section, slides into the lower post and is then secured using a stainless steel shear pin. During a head-on impact, longitudinal forces break the shear pin, releasing the upper post. Energy absorption is achieved through friction and deformation as the rail sections slide rearwards.