Think it's short for IMAG, although I'm standing by to be corrected.......
IMAG - Skid resistance friction trailer
STAC - 2012 - A4 - 4 pages - Free
Read english version - Download english version (pdf file 5,3 Mo)
The IMAG, automatic skid resistance friction trailer, was designed and patented by french civil aviation authority. It measures in operational conditions, mainly in winter, the characteristics of skid resistance of runways and allows pilots to know the operating conditions of these areas.
This device is used by the STAC as a national reference vehicle in the Certification process for self-wetting continuous friction measuring equipment.
Last edited by Dave Clarke Fife; 19th Jan 2013 at 09:35.