GATE CE 2018 Set 1 — Question 44
Go beyond PYQs with Success TrackerAI-powered personalised practice and doubt support. Unlimited practice on eligible plans; AI usage limits apply.MCQ+2 / -0.67HardStopping Sight DistanceCross-Section & Sight DistanceTransportation Engineering
Transportation Engineering → Cross-Section & Sight Distance → Stopping Sight Distance
Last updated
Question
A priority intersection has a single-lane one-way traffic road crossing an undivided two-lane two-way traffic road. The traffic stream speed on the single-lane road is 20 kmph and the speed on the two-lane road is 50 kmph. The perception-reaction time is 2.5 s, coefficient of longitudinal friction is 0.38 and acceleration due to gravity is . 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
Correct answer
(C) 111 m and 15 m
Solution
For a priority intersection (Stop/Yield control), the sight distance requirements are governed by the time needed for a vehicle on the minor road to cross the major road safely.
For a major road speed of 50 kmph, the recommended crossing time is approximately 8 seconds.
.Thus, the minimum lengths of the sides of the sight triangle are 111 m and 15 m.
1.Distance along the minor road (): According to IRC:66-1976, for a priority intersection, the sight distance along the minor road is typically taken as 15 m from the edge of the major road.
2.Distance along the major road (): This is the distance traveled by a vehicle on the major road during the time () required for the minor road vehicle to perceive, react, and cross.
For a major road speed of 50 kmph, the recommended crossing time is approximately 8 seconds.
.Thus, the minimum lengths of the sides of the sight triangle are 111 m and 15 m.
Continue learning with Success Tracker
A step still unclear? Work through it with support
Use Success Tracker to ask about the reasoning, then try another GATE CE question to check your understanding.
AI-powered practice· Unlimited practice on eligible plans
- PYQs with solutions
- Attempt available previous-year questions, then compare your reasoning with the worked solution. Coverage varies by stream.
- Practice that adapts
- Choose a topic, work on weaker areas and bookmark questions to revisit. Your attempts feed your progress tracking.
- AI doubt support
- Ask follow-up questions about a step or concept while practising, instead of stopping at the final answer.
Unlimited practice is available on eligible plans. Free practice and AI usage have limits; check the current plan allowances before choosing.
This page stays readable without an account. AI responses can be wrong; check them against the solution and source material.
More questions on Cross-Section & Sight Distance
2026 Set 1 Q19Corrections are applied to the basic length of the runway strip considering: (i) The elevation …2026 Set 2 Q23An incident occurred on one side of a median on a four-lane dual carriageway road section. This…2026 Set 2 Q24Which one of the following statements is TRUE?2026 Set 1 Q24Cant on a Broad Gauge railway track is calculated for an equilibrium speed (in km/h),…2026 Set 2 Q25The primary purpose of the Windrose diagram is for the design of