Different Colors Used in Pavement Marking Their Meaning
White: It defines the right edge of the highway by separating traffic going in the same direction.
Yellow: It separates two-way left-turn lanes and reversible lanes from other lanes by separating traffic flows in opposite directions and identifying the left edge of divided/one-way highways and ramps.
Blue: It can be used to replace white handicap parking markings.
Purple: Toll plaza approach lane lines or edge lines operated for registered electronic toll collection vehicles may be supplemented.
Black: For light-coloured pavements that do not provide enough contrast, black is used in conjunction with other pavement markings.
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