RamShield® HC achieves a controlled redirection of errant vehicles by releasing the thrie-beam guardrail from the post at an optimal load to retain rail height, limit dynamic deflection and to allow the post to collapse without tripping the vehicle. The separation of the rail from the post is achieved by a release tab incorporated into the post. The tab controls the release of the rail within the impact zone providing stable vehicle containment and redirection with minimal vehicle roll.

RamShield® HC has been fully crash tested and evaluated according to the specifications for Test Level 4 (TL4) of the AASHTO Manual for Assessing Safety Hardware (MASH). The MASH specification is an update to and supersedes NCHRP Report 350 for the purposes of evaluating new safety hardware devices.

The MASH specification is an update to and supersedes NCHRP Report 350 for the purposes of evaluating new safety hardware devices.

MASH presents uniform guidelines for crash testing permanent and temporary highway safety features and recommends evaluation criteria to assess test results.

MASH considers real-life crash data, changes to the vehicle fleet and in-service performance in developing evaluation criteria.

The RamShield® HC posts are driven directly into the ground and do not require concrete. The 1860mm long posts are driven to an approximate depth of 890mm.

The standard post spacing of RamShield® HC is 2m centres.

The system height of RamShield® HC is 1000mm. The position of the thrie-beam rail will sit approximately 30mm above the top of the posts.