Department of State GrowthTransport

Collapsible Chevron Alignment Markers (CAMs)

A number of motorcycle crashes occur on corners and the impact of the fall may be exacerbated when the rider collides with a rigid structure such as a wall, fence or road traffic sign.

The Department of State Growth is conducting a trial into replacing conventional CAM signage with collapsible CAMs. The trial covers three sites with a history of motorcyclists losing control:

  1. Lyell Highway, just north of Tarraleah's southern access road.
  2. Lyell Highway, at Fourteen Mile Road near Tarraleah.
  3. Tasman Highway, east of Weldborough Pass in Little Plain Region.

The material of a collapsible CAM is a durable non-metal polymer which reduces the potential for cuts when motorcyclists collide with the signs. Collapsible CAMs are a new product for Tasmania; however similar products have been used in the United Kingdom for several years. The signs are sufficiently strong to maintain a vertical position, even in Tasmania's strongest winds and they are robust enough to sustain multiple impacts without significant deterioration.

The mounting which supports the symbol part of a collapsible CAM is the same width as the sign itself and this creates a clearer visual warning of the approaching bend, compared to the narrow pole support with conventional CAMs. In the event of a motorcyclist crash the Collapsible CAMs will absorb the energy of an impact by 'collapsing' with the impact force and then 'springing' back into place after the load has been removed.

Collapsible CAMs installed at Fourteen Mile Road, Lyell Highway

Collapsible Chevron Alignment Markers