The road stud shall be manufactured of materials with adequate chemical, water, and UV resistance.The standard requirements of road studs are divided in the 3 categories- 1. Designated F - Stud with sufficient longitudinal strength for application to flexible, asphaltic concrete pavement.Designated H - Stud with a hard, abrasion-resistant lens surface.Type D - Two-way reflective markers, two colors. Type B - One-way reflective markers, one color.Type A - Two-way reflective markers, one color.Other Typesīased on the number of reflective sides, abrasion resistance and flexural strength the road studs are divided as follows. Green road studs are to be employed to indicate crossable edge line like the lay byes and to how the boundary of acceleration or deceleration line on left-hand side of the carriageway in case of the multi-lane divided carriageways. The yellow color road studs are deployed to indicate a line that should not be crossed with the aim to delineate the right-hand edge of the running carriageway in case of the multi-lane divided carriageways. Red ColorĪs the color red indicates danger, the red-colored road studs are to be used to indicate a line that should not be crossed and mainly to delineate the left-hand edge of the running carriageway. The white colored road studs indicate the traffic lane line and centre of carriageway. The classification of road studs based on the basis of colors is as follows : 1.
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