RamShield® Low Deflection

RamShield® Low Deflection achieves a controlled redirection of errant vehicles by regulating the force to release the rail throughout the impact zone, limiting dynamic deflection and to allow the C-post to collapse without tripping the vehicle.

The separation of the w-beam rail during a vehicle collision is achieved by a release tab. This allows the rail to be disengaged at an optimal load, facilitating safe vehicle containment and redirection.

RamShield® Low Deflection 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.

RamShield® Low Deflection may be installed with the RamBloc™, a 150mm steel RHS spacer positioned between the C-post and w-beam guardrail. The RamBloc™ allows the face of rail to be offset from the C-post, an important design consideration when accommodating the alignment of drainage or asphalt beneath the barrier system.

The RamShield® Low Deflection posts are driven directly into the ground and do not require concrete. The 1660mm long posts are driven to an approximate depth of 890mm.

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

The system height of RamShield® Low Deflection is 800mm. The position of the w-beam rail will sit approximately 30mm above the top of the posts.