Rail dampers are sandwich-like rubber and steel devices affixed on both sides of steel rails to absorb some of the vibration energy that causes noise, and dissipate it as heat. By reducing vibrations, this also has the effect of reducing the wear and tear of the tracks.
The public transit authority is looking for a contractor that will design and produce dampers to Expo Line specifications. Dampers are being targeted for a length of 3.2 km of track.
The contractor will supply all materials, equipment, and tools necessary for SkyTrain maintenance crews to conduct the installation.
Example of rail dampers. (Voestalpine Railway Systems Nortrak)