सडक तथा यातायात इन्जिनियरिङ – Highway & Transportation MCQ
सडक तथा यातायात इन्जिनियरिङ – सिभिल इन्जिनियरिङ
Highway & Transportation · Civil Engineering · ४०३ प्रश्न
४०३ प्रश्न उपलब्ध। मोड छान्नुहोस्:
सडक तथा यातायात इन्जिनियरिङ: प्रश्न र उत्तर
सही लागेको विकल्पमा थिच्नुहोस्। सही भए हरियो, गलत भए रातो देखिन्छ; ३ सेकेन्डपछि सही उत्तर र व्याख्या देखिन्छ।
सही: ० / ०
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Warning (cautionary) road signs such as 'school ahead' or 'sharp curve' are generally of which shape?
सही उत्तर: ख) Equilateral triangle with a red border
Warning signs are triangular with red borders; mandatory signs are circular and informatory signs are rectangular.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A collision diagram in accident studies shows:
सही उत्तर: क) The approximate paths of vehicles and pedestrians involved in accidents at a location
Collision diagrams use symbols to plot accident types and paths at a site; a condition diagram shows the physical features of the location.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A 10 km road section carrying an AADT of 5000 vehicles recorded 20 accidents in a year. The accident rate per million vehicle-km is about:
सही उत्तर: ग) 1.10
Vehicle-km per year = 5000 × 365 × 10 = 18.25 × 10⁶; rate = 20/18.25 ≈ 1.10 accidents per million vehicle-km.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In origin-destination (O-D) studies, the method in which vehicles are stopped at a survey station and drivers are questioned about their trip is the:
सही उत्तर: क) Roadside interview method
In the roadside interview method drivers are briefly interviewed at a cordon point about origin, destination and purpose.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In traffic studies, time mean speed compared with space mean speed is:
सही उत्तर: क) Always equal to or greater than space mean speed
Time mean speed is the arithmetic mean of spot speeds at a point; faster vehicles are over-represented, so it is at least the space mean speed.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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If the average spacing between vehicles in a lane is 25 m, the traffic density is:
सही उत्तर: घ) 40 vehicles/km
Density = 1000/spacing = 1000/25 = 40 vehicles per km.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Camber on a road surface is most commonly provided in the shape of a:
सही उत्तर: घ) Parabola or straight lines meeting at the crown
Cambers are parabolic, straight (two planes) or combined (parabolic at centre, straight at edges); parabolic is preferred by fast vehicles.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A sharp bend on a hill road where the road turns back almost on itself to gain height is called a:
सही उत्तर: क) Hairpin bend
Hairpin bends allow a hill road to climb a steep slope in zig-zag; they require special design for radius, widening and gradient.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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For designing valley curves for headlight sight distance, IRC takes the headlight height and the upward beam angle as:
सही उत्तर: ग) 0.75 m and 1°
The headlight is assumed 0.75 m above the road with its beam inclined 1° upward.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A summit curve joins grades with deviation angle N = 0.06. For a stopping sight distance of 120 m (L greater than S), using L = NS²/4.4, the length of the summit curve is about:
सही उत्तर: ग) 196 m
L = 0.06 × 120²/4.4 = 864/4.4 ≈ 196 m, which is greater than S, so the assumption holds.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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