“…Examples of other treatments involving changes in the road surface and surrounding environment include surfacing the road shoulders with different coloured asphalt (Rosey, Auberlet, Bertrand, & Plainchault, 2008), and the musical road sponsored by Honda in California, which used grooves in the road to produce a well-known sound track (BBC, 2008). Research on rumble devices has shown a 15-20% reduction in fatigue-related accidents as a result of centre line rumble strips (Persaud, Retting & Lyon, 2004), whilst edge line rumble strips are thought to have reduced such accidents by around 40% (Mahoney, Porter & Donnell, 2003;Räsänen, 2005).…”