IRC:86 ''Geometric Design Standards for Urban Roads'' specifies design speed for:
Choose the correct answer
National Highways only
Urban roads (arterials, sub-arterials, collectors, local streets) at lower speeds than rural NH
Airport runways
Coastal expressways
Correct Answer
B. Urban roads (arterials, sub-arterials, collectors, local streets) at lower speeds than rural NH
Why is this the answer?
IRC:86: Geometric design for urban roads. Lower design speeds than rural highways because of: frequent intersections, pedestrians, mixed traffic, right of way constraints. Arterials: 60–80 km/h; sub-arterials: 50–60 km/h; collector: 40–50 km/h; local: 30 km/h. Pedestrian safety: provides footpaths, crossings.
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