Practice Stopping Sight Distance (ssd) (13.2.1) - Sight Distance - Transportation Engineering

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6 sample questions

Question 1.
What is Stopping Sight Distance?
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Consider what distance ensures safety from collisions.
Question 2.
State the formula for lag distance.
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Think about how far the car travels before braking starts.
3Question 3.
What does Stopping Sight Distance (SSD) measure?
- Distance to travel before brake application
- Distance needed for safe stopping
- Distance at which reactions initiate
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Focus on the outcome, what SSD ensures.
4Question 4.
True or False: Lag distance and braking distance are the same.
- True
- False
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Remember when each occurs during stopping.
Question 5.
A vehicle moving at 90 km/h encounters a stopped vehicle. Calculate the SSD needed considering a reaction time of 2.5 seconds and a friction coefficient of 0.6.
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Convert km/h to m/s for accurate calculations.
Question 6.
How would SSD calculations differ on an inclined road? Illustrate with an example.
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Think of how gravity affects the effective stopping ability.

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