The 'intersection sight distance' (ISD) ensures that:
Choose the correct answer
Vehicles can travel at maximum speed at intersection
Minor road driver can see major road vehicles with enough time to cross safely or stop — no obstacles in sight triangle
Only pedestrians can cross safely
Only for rural intersections with trees
Correct Answer
B. Minor road driver can see major road vehicles with enough time to cross safely or stop — no obstacles in sight triangle
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ISD: at an intersection, drivers on the minor road can see approaching vehicles on the major road in time to either proceed safely or stop. ISD from minor road driver position: depends on design speed of major road and gap acceptance. IRC:SP:12 (non-signalised): ISD triangle drawn; no obstructions within triangle. For signalised intersections: sight distance to stop line.
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