For highway geometric design, terrain classification is important mainly because it influences:
Choose the correct answer
Bitumen grade only
Cement content
Design speed, gradients and curve standards
Number of toll booths
Correct Answer
C. Design speed, gradients and curve standards
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Plain/rolling/mountainous/steep terrain changes achievable speed, gradients, curve radius and safety clearances. Reference: IRC:73-1980 / latest IRC:73-2023 revision topic area; verify exact latest clause/page in adopted copy - terrain/design speed tables
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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.