A priority intersection has a single-lane one-way traffic road crossing an undivided twolane two-way traffic road. The traffic stream speed on the single-lane road is $20 \mathrm{kmph}$ and the speed on the two-lane road is $50 \mathrm{kmph}$. The perception-reaction time is $2.5 \mathrm{~s}$ coefficient of longitudinal friction is 0.38 and acceleration due to gravity is $9.81 \mathrm{~m} / \mathrm{s}^{2} . \mathrm{A}$ clear sight triangle has to be ensured at this intersection. The minimum lengths of the sides of the sight triangle along the two-lane road and the single-lane road, respectively will be

(A) $50 \mathrm{~m}$ and $20 \mathrm{~m}$

(B) $61 \mathrm{~m}$ and $18 \mathrm{~m}$

(C) $111 \mathrm{~m}$ and $15 \mathrm{~m}$

(D) $122 \mathrm{~m}$ and $36 \mathrm{~m}$

A priority intersection has a single-lane one-way traffic road crossing an undivided twolane two-way traffic road. The traffic stream speed on the single-lane road is $20 \mathrm{kmph}$ and the speed on the two-lane road is $50 \mathrm{kmph}$. The perception-reaction time is $2.5 \mathrm{~s}$ coefficient of longitudinal friction is 0.38 and acceleration due to gravity is $9.81 \mathrm{~m} / \mathrm{s}^{2} . \mathrm{A}$ clear sight triangle has to be ensured at this intersection. The minimum lengths of the sides of the sight triangle along the two-lane road and the single-lane road, respectively will be

(A) $50 \mathrm{~m}$ and $20 \mathrm{~m}$

(B) $61 \mathrm{~m}$ and $18 \mathrm{~m}$

(C) $111 \mathrm{~m}$ and $15 \mathrm{~m}$

(D) $122 \mathrm{~m}$ and $36 \mathrm{~m}$

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