GATE 2025 AR — Planning – Question 65

Urban Land Use and Transportation · Design of roads, intersections, grade separators and parking areas · 2 marks · Numerical answer

The diagram shows an uncontrolled four-arm two-way junction. Each approach permits left, right and through movements, no U-turn. Find the maximum number of vehicular crossing conflict points, as an integer.

Diagram for GATE 2025 AR — Planning question 65

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Correct answer: 16 to 16

Explanation

For the standard four-arm junction with all 12 movements, the conflict inventory comprises 16 crossing, 8 merging and 8 diverging points. The question asks only crossing conflicts, so the answer is 16. Counting all conflict types would give 32 and would include movements that meet or separate rather than cross.

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