“…Some studies found the installation of RLCs reduces incidences of rear-end collisions (South et al, 1988), while several other studies indicated that the effects on rear-end collisions are small or even unfavourable (Huang et al, 2008;Obeng and Burkey, 2008;Retting et al, 2003). For right-angle collisions, it is generally agreed that RLCs have favourable effects (Aeron-Thomas and Hess, 2005;McCartt and Eichelberger, 2012;Retting and Kyrychenko, 2002).…”