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The Scottish Road Network Landslides Study made a number of recommendations for landslide management and mitigation. Amongst these was that ‘wig-wag’signs could be suitable at sites with specific conditions, particularly those sites at which debris flow events occur on a regular basis. Such signs incorporate a standard rockfall/landslide red warning triangle, flashing lights, and a sub-plate that that warns of ‘Higher risk when lights flash’. A trial of such signs commenced on the A83 in 2011 and was centred on the section of the route that includes the Rest and be Thankful. As part of this trial it was intended that a detailed technical and perceptual evaluation of the signing arrangements be undertaken. Accordingly, the aims of the work presented in this report were to examine the efficacy of the operation of the wig-wag signing arrangements at this location, and to explore the perceptions and attitudes of road …