Edge lines are useful because they:
Choose the correct answer
Increase pavement strength
Increase traffic signal cycle
Replace shoulder
Delineate carriageway edge and guide drivers at night/poor visibility
Correct Answer
D. Delineate carriageway edge and guide drivers at night/poor visibility
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Edge markings help lateral guidance and define usable road width. Reference: IRC:35-2015 Code of Practice for Road Markings; public PDF page references use PDF pagination Sec.4 edge lines; PDF pp.21 onwards
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This MCQ belongs to Geometric Design of Highways and Traffic Engineering. Full tests include timed attempts, rank comparison and subject-wise analysis.