Most answered questions in Transportation Engineering / GO Civil

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1

GATE2018 CE-1: 34
A priority intersection has a single-lane oneway 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 ... be $50$ m and $20$ m $61$ m and $18$ m $111$ m and $15$ m $122$ m and $36$ m

A priority intersection has a single-lane oneway traffic road crossing an undivided two-lane two-way traffic road. The traffic stream speed on the single lane road is $20...

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gatecse asked Feb 17, 2018

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2

GATE2018 CE-2: 54
A $7.5$ m wide two-lane road on a plain terrain is to be laid along a horizontal curve of radius $510$ m. For a design speed of $100$ kmph, super elevation is provided as per $\text{IRC:}73-1980$. Consider acceleration due to gravity as $9.81 m/s^2$. The level difference between the inner and outer edges of the road (in m, upto three decimal places is ________

A $7.5$ m wide two-lane road on a plain terrain is to be laid along a horizontal curve of radius $510$ m. For a design speed of $100$ kmph, super elevation is provided as...

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gatecse asked Feb 17, 2018

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3

GATE2018 CE-1: 55
An aircraft approaches the threshold of a runway strip at a speed of $200$ km/h. The pilot decelerates the aircraft at a rate of $1.697 \: m/s^2$ and takes $18 \: s$ to exit the runway strip. If the deceleration after exciting the runway is $1 \: m/s^2$, then the distance (in m, up to one decimal place) of the gate position from the location of exit on the runway is _______

An aircraft approaches the threshold of a runway strip at a speed of $200$ km/h. The pilot decelerates the aircraft at a rate of $1.697 \: m/s^2$ and takes $18 \: s$ to e...

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gatecse asked Feb 17, 2018

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4

GATE2018 CE-1: 54
Given the following data: design life $n=15$ years, lane distribution factor $D=0.75$, annual rate of growth of commercial vehicles $r=6 \%$, vehicle damage factor $F=4$ and initial traffic in the year of completion of construction $= 3000$ ... , the design traffic in terms of cumulative number of standard axles (in million standard axles, up to two decimal places) is _____

Given the following data: design life $n=15$ years, lane distribution factor $D=0.75$, annual rate of growth of commercial vehicles $r=6 \%$, vehicle damage factor $F=4$ ...

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gatecse asked Feb 17, 2018

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5

GATE2018 CE-1: 14
A bitumen sample has been graded as $\text{VG}30$ as per $\text{IS:}73-2013$. The $'30'$ in the grade means that penetration of bitumen at $25^{\circ}C$ is between $20$ and $40$ viscosity of bitumen at $60^{\circ}C$ is between $2400$ and $3600$ ... of bitumen at $27^{\circ}C$ is more than $30$ cm elastic recovery of bitumen at $15^{\circ}C$ is more than $30 \%$

A bitumen sample has been graded as $\text{VG}30$ as per $\text{IS:}73-2013$. The $'30'$ in the grade means thatpenetration of bitumen at $25^{\circ}C$ is between $20$ an...

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gatecse asked Feb 17, 2018

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6

GATE Civil 2024 Set 1 | Question: 12
A car is travelling at a speed of $60 \mathrm{~km} / \mathrm{hr}$ on a section of a National Highway having a downward gradient of $2 \%$. The driver of the car suddenly observes a stopped vehicle on the car path at a distance $130 \mathrm{~m}$ ahead, and applies ... the car to a safe stop lies in the range $126$ to $130$ $41$ to $45$ $33$ to $37$ $75$ to $79$

A car is travelling at a speed of $60 \mathrm{~km} / \mathrm{hr}$ on a section of a National Highway having a downward gradient of $2 \%$. The driver of the car suddenly ...

admin

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admin asked Feb 16

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7

GATE Civil 2021 Set 2 | Question: 13
Relationship between traffic speed and density is described using a negatively sloped straight line. If $v_{f}$ is the free flow speed then the speed at which the maximum flow occurs is $0$ $\frac{v_{f}}{4}$ $\frac{v_{f}}{2}$ $v_{f}$

Relationship between traffic speed and density is described using a negatively sloped straight line. If $v_{f}$ is the free flow speed then the speed at which the maximum...

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go_editor asked Mar 1, 2021

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8

GATE Civil 2021 Set 2 | Question: 16
The softening point of bitumen has the same unit as that of distance temperature time viscosity

The softening point of bitumen has the same unit as that ofdistancetemperaturetimeviscosity

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go_editor asked Mar 1, 2021

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9

GATE Civil 2021 Set 2 | Question: 24
In a three-phase signal system design for a four-leg intersection, the critical flow ratios for each phase are $0.18, 0.32$, and $0.22$. The total loss time in each of the phases is $\text{2 s}$. As per Webster's formula, the optimal cycle length (in $\text{s}, \textit{round off to the nearest integer}$) is _______________

In a three-phase signal system design for a four-leg intersection, the critical flow ratios for each phase are $0.18, 0.32$, and $0.22$. The total loss time in each of th...

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go_editor asked Mar 1, 2021

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10

GATE Civil 2021 Set 2 | Question: 53
In an aggregate mix, the proportions of coarse aggregate, fine aggregate and mineral filler are $\text{55%, 40% and 5%}$, respectively. The values of bulk specific gravity of the coarse aggregate, fine aggregate and mineral filler are ... . The bulk specific gravity of the aggregate mix ($\textit{round off to two decimal places}$) is ____________________

In an aggregate mix, the proportions of coarse aggregate, fine aggregate and mineral filler are $\text{55%, 40% and 5%}$, respectively. The values of bulk specific gravit...

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go_editor asked Mar 1, 2021

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11

GATE Civil 2021 Set 2 | Question: 54
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 deceleration rate are $\text{9.81 m/s$^{2}$}$ and $\text{3. ... /reaction time (in $\text{s}, \textit{round off to two decimal places}$) used in the $\text{SSD}$ calculation is ________________________

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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12

GATE Civil 2021 Set 2 | Question: 55
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 $\text{80 km/h}$. Consider dynamic gauge of $\text{BG}$ ... $\text{30.5 m}$ arc. The cant deficiency for the curve (in $\text{mm}, \textit{round off to integer}$) is ________________________

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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13

GATE Civil 2021 Set 1 | Question: 14
The shape of the most commonly designed highway vertical curve is circular (single radius) circular (multiple radii) parabolic spiral

The shape of the most commonly designed highway vertical curve iscircular (single radius)circular (multiple radii)parabolicspiral

Arjun

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Arjun asked Feb 19, 2021

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14

GATE Civil 2021 Set 1 | Question: 15
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 required super elevation is $0.02$ $0.05$ $0.07$ $0.09$

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...

Arjun

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Arjun asked Feb 19, 2021

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15

GATE Civil 2021 Set 1 | Question: 25
A signalized intersection operates in two phases. The lost time is $3$ seconds per phase. The maximum ratios of approach flow to saturation flow for the two phases are $0.37$ and $0.40$. The optimum cycle length using the Webster's method (in seconds, round off to one decimal place) is ______________

A signalized intersection operates in two phases. The lost time is $3$ seconds per phase. The maximum ratios of approach flow to saturation flow for the two phases are $0...

Arjun

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Arjun asked Feb 19, 2021

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16

GATE Civil 2021 Set 1 | Question: 35
On a road, the speed – density relationship of a traffic stream is given by $u=70-0.7k$ (where speed, $u$, is in $\text{km/h}$ and density, $k$ is in $\text{veh/km}$). At the capacity condition, the average time headway will be $0.5 \:s$ $1.0 \:s$ $1.6 \:s$ $2.1 \:s$

On a road, the speed – density relationship of a traffic stream is given by $u=70-0.7k$ (where speed, $u$, is in $\text{km/h}$ and density, $k$ is in $\text{veh/km}$). ...

Arjun

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Arjun asked Feb 19, 2021

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17

GATE Civil 2021 Set 1 | Question: 37
Vehicular arrival at an isolated intersection follows the Poisson distribution. The mean vehicular arrival rate is $2$ vehicle per minute. The probability ($\textit{round off to two decimal places}$) that at least $2$ vehicles will arrive in any given $1$-minute interval is _______________________

Vehicular arrival at an isolated intersection follows the Poisson distribution. The mean vehicular arrival rate is $2$ vehicle per minute. The probability ($\textit{round...

Arjun

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Arjun asked Feb 19, 2021

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18

GATE Civil 2021 Set 1 | Question: 53
Spot speeds of vehicles observed at a point on a highway are $\text{40, 55, 60, 65 and 80 km/h}$. The space-mean speed (in $\text{km/h}$, $\textit{round off to two decimal places}$) of the observed vehicles is ___________________

Spot speeds of vehicles observed at a point on a highway are $\text{40, 55, 60, 65 and 80 km/h}$. The space-mean speed (in $\text{km/h}$, $\textit{round off to two decima...

Arjun

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Arjun asked Feb 19, 2021

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19

GATE Civil 2021 Set 1 | Question: 54
The longitudinal section of a runway provides the following data: $\begin{array}{|lc|cI|}\hline &\textbf{End-to-end runway $\textbf{(m)}$} & \textbf{Gradient $ ... $\%$, $\textit{round off to two decimal places}$) is ________________

The longitudinal section of a runway provides the following data:$$\begin{array}{|lc|cI|}\hline&\textbf{End-to-end runway $\textbf{(m)}$} & \textbf{Gradient $(\%)$} \\ \...

Arjun

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Arjun asked Feb 19, 2021

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20

GATE2020-CE-1-20
In an urban area, a median is provided to separate the opposing stream of traffic. As per $IRC:86-1983$, the desirable minimum width (in $m$, expressed as integer) of the median, is _______.

In an urban area, a median is provided to separate the opposing stream of traffic. As per $IRC:86-1983$, the desirable minimum width (in $m$, expressed as integer) of the...

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go_editor asked Feb 27, 2020

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21

GATE2020-CE-1-32
The relationship between traffic flow rate (q) and density (D) is shown in the figure The shock wave condition is depicted by flow with respect to point $1\:(q_1=q_{max})$ flow changing from point $2$ to point $6\:(q_2>q_6)$ flow changing from point $3$ to point $7\:(q_3<q_7)$ flow with respect to point $4$ and point $5\:(q_4=q_5)$

The relationship between traffic flow rate (q) and density (D) is shown in the figure The shock wave condition is depicted byflow with respect to point $1\:(q_1=q_{max})$...

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go_editor asked Feb 27, 2020

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22

GATE2020-CE-1-33
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 the clearway? (Note: None of the options are drawn to scale)

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...

go_editor

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go_editor asked Feb 27, 2020

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23

GATE2020-CE-1-45
Traffic volume count has been collected on a $2$-lane road section which needs upgradation due to severe traffic flow condition. Maximum service flow rate per lane is observed as $1280\:veh/h$ ... are Regular Commuters', the number of extra lane(s) (round off to the next higher integer) to be provided, is ______.

Traffic volume count has been collected on a $2$-lane road section which needs upgradation due to severe traffic flow condition. Maximum service flow rate per lane is obs...

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go_editor asked Feb 27, 2020

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24

GATE2020 CE-2-9
The traffic starts discharging from an approach at an intersection with the signal turning green. The constant headway considered from the fourth or fifth headway position is referred to as discharge headway effective headway intersection headway saturation headway

The traffic starts discharging from an approach at an intersection with the signal turning green. The constant headway considered from the fourth or fifth headway positio...

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go_editor asked Feb 13, 2020

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25

GATE2020 CE-2-20
For an axle load of $15$ tonne on a road, the Vehicle Damage Factor (round off to two decimal places), in terms of the standard axle load of $8$ tonne, is __________.

For an axle load of $15$ tonne on a road, the Vehicle Damage Factor (round off to two decimal places), in terms of the standard axle load of $8$ tonne, is __________.

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go_editor asked Feb 13, 2020

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26

GATE2020 CE-2-21
$24$-$h$ traffic count at a road section was observed to be $1000$ vehicles on a Tuesday in the month of July. If daily adjustment factor for Tuesday is $1.21$ and monthly adjustment factor for July is $0.913$, the Annual Average Daily Traffic (in veh/day, round off to the nearest integer) is __________.

$24$-$h$ traffic count at a road section was observed to be $1000$ vehicles on a Tuesday in the month of July. If daily adjustment factor for Tuesday is $1.21$ and monthl...

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go_editor asked Feb 13, 2020

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27

GATE2020 CE-2-31
The flow-density relationship of traffic on a highway is shown in the figure The correct representation of speed-density relationship of the traffic on this highway is

The flow-density relationship of traffic on a highway is shown in the figureThe correct representation of speed-density relationship of the traffic on this highway is

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go_editor asked Feb 13, 2020

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28

GATE2020 CE-2-32
$\text{Group-I}$ gives a list of test methods for evaluating properties of aggregates. $\text{Group-II}$ ... $P-2; Q-1; R-4; S-3$ $P-3; Q-4; R-1; S-2$ $P-2; Q-4; R-3; S-1$

$\text{Group-I}$ gives a list of test methods for evaluating properties of aggregates. $\text{Group-II}$ gives the list of properties to be evaluated.$$\begin{array}{ll}\...

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29

GATE2020 CE-2-33
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 temperature is $48^{\circ}C$ for the same month of the year. From the given information, the calculated Airport Reference Temperature $\text{(in}\: ^{\circ}C),$ is $36$ $39$ $42$ $48$

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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go_editor asked Feb 13, 2020

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30

GATE2020 CE-2-45
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. Consider acceleration due to gravity as $9.8 m/s^2$. The intermediate sight distance (in $m,$ round off to the nearest integer) required for the road is ________.

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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go_editor asked Feb 13, 2020

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31

GATE2017 CE-2-11
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 $e= 1.676 \dfrac{V^2}{R} \\$ $e= 1.315 \dfrac{V^2}{R} \\$ $e= 0.80 \dfrac{V^2}{R} \\$ $e= 0.60 \dfrac{V^2}{R}$

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= ...

gatecse

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gatecse asked Aug 7, 2019

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32

GATE2017 CE-2-12
The safety within a roundabout and the efficiency of a roundabout can be increased, respectively, by increasing the entry radius and increasing the exit radius increasing the entry radius and decreasing the exit radius decreasing the entry radius and increasing the exit radius decreasing the entry radius and decreasing the exit radius

The safety within a roundabout and the efficiency of a roundabout can be increased, respectively, byincreasing the entry radius and increasing the exit radiusincreasing t...

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gatecse asked Aug 7, 2019

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33

GATE2017 CE-2-36
Two cars P and Q are moving in a racing track continuously for two hours. Assume that no other vehicles are using the track during this time. The expressions relating the distance travelled $d$ (in km) and time $t$ (in hour) for both vehicles are given as P: $d=60 \: t$ Q: ... would be $15$ km at $30$ minutes $15$ km at $15$ minutes $30$ km at $30$ minutes $30$ km at $15$ minutes

Two cars P and Q are moving in a racing track continuously for two hours. Assume that no other vehicles are using the track during this time. The expressions relating the...

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gatecse asked Aug 7, 2019

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34

GATE2017 CE-2-37
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 $=80$ kPa. The unit weight of water is $9.81 kN/m^3$. The unit weights of the soil above and below the ground water ... conditions, respectively, would be $1.6$ and $0.9$ $0.9$ and $1.6$ $0.6$ and $1.2$ $1.2$ and $0.6$

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...

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gatecse asked Aug 7, 2019

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35

GATE2017 CE-2-54
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 and underlying soil are given below: The ratio (up to one decimal place) of $l_P/l_Q$ is _______

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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gatecse asked Aug 7, 2019

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36

GATE2019 CE-1: 11
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 the braking distance (for the design vehicle to come to a stop) measured along the horizontal (assume all other parameters ... $\dfrac{0.02 \: G}{f_r+0.01 \:G} \times 100 \\$ $\dfrac{2f_r}{f_r+0.01 \:G} \times 100$

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...

Arjun

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Arjun asked Feb 14, 2019

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37

GATE2019 CE-1: 12
An isolated concrete pavement slab of length $L$ is resting on a frictionless base. The temperature of the top and bottom fibre of the slab are $T_t$ and $T_b$, respectively. Given: the coefficient of thermal expansion $=\alpha$ and the elastic modulus $=E$ ... is calculated as $L \alpha (T_t-T_b)$ $E \alpha (T_t-T_b)$ $\dfrac{E \alpha (T_t-T_b)}{2}\\$ zero

An isolated concrete pavement slab of length $L$ is resting on a frictionless base. The temperature of the top and bottom fibre of the slab are $T_t$ and $T_b$, respectiv...

Arjun

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Arjun asked Feb 14, 2019

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38

GATE2019 CE-1: 21
The maximum number of vehicles observed in any five minute period during the peak hour is $160$. If the total flow in the peak hour is $1000$ vehicles, the five minute peak hour factor (round off to $2$ decimal places) is _______

The maximum number of vehicles observed in any five minute period during the peak hour is $160$. If the total flow in the peak hour is $1000$ vehicles, the five minute pe...

Arjun

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Arjun asked Feb 14, 2019

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39

GATE2019 CE-1: 38
A box measuring $50 \: cm \times 50 \: cm \times 50 \: cm$ is filled to the top with dry coarse aggregate of mass $187.5 \: kg$. The water absorption and specific gravity of the aggregate are $0.5 \%$ and $2.5,$ respectively. The maximum quantity of water (in kg, round off to $2$ decimal places) required to fill the box completely is __________

A box measuring $50 \: cm \times 50 \: cm \times 50 \: cm$ is filled to the top with dry coarse aggregate of mass $187.5 \: kg$. The water absorption and specific gravity...

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40

GATE2019 CE-1: 43
A staff is placed on a benchmark (BM) of reduced level (RL) $100.000 \: m$ and a theodolite is placed at a horizontal distance of $50 \: m$ from the BM to measure the vertical angles. The measured vertical angles from the horizontal at the staff readings of ... the same. Taking the height of the instrument as $1.400 \: m$, the RL (in $m$) of the theodolite station is ____________

A staff is placed on a benchmark (BM) of reduced level (RL) $100.000 \: m$ and a theodolite is placed at a horizontal distance of $50 \: m$ from the BM to measure the ver...

Arjun

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Arjun asked Feb 14, 2019