Delineators are retro-reflective devices typically mounted above the roadway surface and at continuous intervals along the side of the roadway to indicate alignment of the roadway. Variants to the MUTCD defined delineators are commonly used in conventional plazas to channelize vehicles into a toll lane and prevent crossing into or out of a channelized lane or accessway. The more commonly used delineators installed to separate vehicles are tubular flexible stanchions that are anchored to the pavement using adhesives and or hardware. Pop-up delineators are also available and should be considered for use at plazas with reversible lanes. Delineators used to define plaza alignment are commonly rigid and are anchored below the ground surface.
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