Recent questions and answers in Transportation Infrastructure

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Which one of the following statements is TRUE?Cant deficiency is related to train moving faster, and Cant excess is related to train moving slower.Cant deficiency is rela...
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The primary purpose of the Windrose diagram is for the design oflength of a runway.orientation of a runway.width of a runway.gradient of a runway.
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Corrections are applied to the basic length of the runway strip considering:The elevation $\text{H}$ (in m) of the airport above Mean Sea Level (MSL)Corrected air tempera...
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Cant $C$ on a Broad Gauge railway track is calculated for an equilibrium speed $V$ (in $\mathrm{km} / \mathrm{h}$), dynamic gauge $G$ (in mm ) and radius of curve $R$ (in...
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A two lane, one-way road with radius of $50$ m is predominantly carrying lorries with wheelbase of $5$ m. The speed of lorries is restricted to be between $60$ kmph and $...
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A super-elevation $e$ is provided on a circular horizontal curve such that a vehicle can be stopped on the curve without sliding. Assuming a design speed $v$ and maximum ...
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A road is being designed for a speed of $110$ km/hr on a horizontal curve with a super elevation of $8 \%$. If the coefficient of side friction is $0.10$, the minimum rad...
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The perception-reaction time for a vehicle travelling at $90$ km/h, given the coefficient of longitudinal friction of $0.35$ and the stopping sight distance of $170$ m (a...
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The base length of the runway at the mean sea level $\text{(MSL)}$ is $1500 \; \text{m}.$ If the runway is located at an altitude of $300 \; \text{m}$ above the $\text{(M...
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The shape of the most commonly designed highway vertical curve iscircular (single radius)circular (multiple radii)parabolicspiral
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A highway designed for $\text{80 km/h}$ speed has a horizontal curve section with radius $\text{250 m}$. If the design lateral friction is assumed to develop fully, the r...
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For a $2^{\circ}$ curve on a high speed Broad Gauge $\text{(BG)}$ rail section, the maximum sanctioned speed is $\text{100 km/h}$ and the equilibrium speed is $\text{80 k...
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​​​​​As per the International Civil Aviation Organization (ICAO), the basic runway length is increased by $x(\%)$ for every $y(\mathrm{~m})$ raise in elevation from the M...
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​​​​​​The maximum degree of the curve that can be used for railways in a mountainous region is$10$$20$$50$$40$
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The point where the road alignment changes from a tangent to a curve is known as $\_\_\_\_\_\_\_\_$Point of deflectionPoint of intersectionPoint of curvePoint of tangency
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The number of trains and their corresponding speeds for a curved Broad Gauge section with $437 \mathrm{~m}$ radius, are$20$ trains travel at a speed of $40 \mathrm{~km} /...
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The stopping sight distance $\text{(SSD)}$ for a level highway is $\text{140 m}$ for the design speed of $\text{90 km/h}$. The acceleration due to gravity and deceleratio...
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After applying the correction for elevation and temperature, the runway length is $700 \: \mathrm{m}$. The corrected runway length (in $\mathrm{m}$) for an effective grad...
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The longitudinal section of a runway provides the following data:$$\begin{array}{|lc|cI|}\hline&\textbf{End-to-end runway $\textbf{(m)}$} & \textbf{Gradient $(\%)$} \\ \...
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The appropriate design length of a clearway is calculated on the basis of ‘Normal Take-off’ condition. Which one of the following options correctly depicts the length of ...
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For the hottest month of the year at the proposed airport site, the monthly mean of the average daily temperature is $39^{\circ}C$. The monthly mean of the maximum daily ...
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The design speed of a two-lane two-way road is $60\: km/h$ and the longitudinal coefficient of friction is $0.36$. The reaction time of a driver is $2.5$ seconds. Conside...
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For a broad gauge railway track on a horizontal curve of radius $R$ (in m), the equilibrium cant $e$ required for a train moving at a speed of $V$ (in km per hour) is$e= ...
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For the construction of a highway, a cut is to be made as shown in the figure.The soil exhibits $c’=20$ kPa, $\phi’=18^{\circ}$, and the undrained shear strength $=80$ kP...
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The radii of relative stiffness of the rigid pavements P and Q are denoted by $l_P$ and $l_Q$, respectively. The geometric and material properties of the concrete slab an...
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The coefficient of average rolling friction of a road road is $f_r$ and its grade is $+G\%$. If the grade of this road is doubled, what will be the percentage change in t...
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A vehicle is moving on a road of grade $+4 \%$ at a speed of $20 \: m/s$. Consider the coefficient of rolling friction as $0.46$ and acceleration due to gravity as $10 \:...
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A broad gauge railway line passes through a horizontal curved section (radius $=875 \:m$) of length $200 \: m$. The allowable speed on this portion is $100 \: km/h$. For ...
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A runway is being constructed in a new airport as per the International Civil Aviation Organization (ICAO) recommendations. The elevation and the airport reference temper...
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The accuracy of an Electronic Distance Measuring Instrument (EDMI) is specified as $\pm (a \: mm + b \: ppm)$. Which one of the following statements is correct?Both $a$ a...
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For two major roads with divided carriageway crossing at right angle, a full clover leaf interchange with four indirect ramps is provided. Following statements are made o...
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The following data are related to a horizontal curved portion of a two-lane highway: length of curve $200$ m, radius of curve $=300$ m and with of pavement $=7.5$ m. In o...
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Road roughness is measured usingBenkelman beamBump integratorDynamic cone penetrometerFalling weight deflectometer
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The speed-density relationship for a road section is shown in the figure.The shape of the flow-density relationship ispiecewise linearparabolicinitially linear than parab...
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