RamShield® W-Beam achieves a controlled redirection of errant vehicles by releasing the rail 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 is designed to pull forward and tear from the post and remains connected to the rail to ensure there is no debris from the system that may otherwise present as a danger to other motorists.

RamShield® W-Beam has been fully crash tested and evaluated according to the specifications for Test Level 3 (TL3) 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® W-Beam posts are driven directly into the ground and do not require concrete. The 1560mm long posts are driven to an approximate depth of 810mm.

The standard post spacing of RamShield® W-Beam is 2m centres.

The system height of RamShield® W-Beam is 800mm. The position of the w-beam rail will sit approximately 50mm above the top of the posts.