TRL were commissioned by Transport Scotland to support the development and coordination of a third phase of live brine trials for the 2016/17 winter season; to develop and enhance research into understanding liquid de-icer performance on Scotland’s roads. Brine spreading was carried out during the 2016/17 winter season including the spreading of brine over the full length of treatment routes. This enabled assessment over a full winter season and experience to be gained spreading in the more varied conditions that occur along longer treatment lengths.
The trials demonstrated that brine was an effective treatment for the conditions prevailing during the trial period, and brine spreading was a suitable treatment on the majority of days when spreading occurred on the trial sites. The results have provided an indication of the conditions of road surface wetness and temperature for which brine spreading is effective, and some indication on the limits of effectiveness during precipitation. Based on the conditions under which the brine spreading has been trialled, recommended spread rates have been provided for precautionary treatments before frost and light snow or rain.

Want to know more about this project?