Most viewed questions in Transportation Engineering / GO Civil

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81

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 $1\:(q_1=q_{max})$...

go_editor

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go_editor asked Feb 27, 2020

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82

GATE2018 CE-1: 16
A well-designed signalized intersection is one in which the crossing conflicts are increased total delay is minimized cycle time is equal to the sum of red and green times in all phases cycle time is equal to the sum of red and yellow times in all phases

A well-designed signalized intersection is one in which thecrossing conflicts are increasedtotal delay is minimizedcycle time is equal to the sum of red and green times i...

gatecse

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gatecse asked Feb 17, 2018

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83

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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84

GATE2015-1-22
The penetration value of a bitumen sample tested at $25^{\circ}C$ is $80$. When this sample is heated to $60^{\circ}C$ and tested again, the needle of the penetration test apparatus penetrates the bitumen sample by $d$ mm. The value of $d$ CANNOT be less than ______ mm.

The penetration value of a bitumen sample tested at $25^{\circ}C$ is $80$. When this sample is heated to $60^{\circ}C$ and tested again, the needle of the penetration tes...

Milicevic3306

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Milicevic3306 asked Mar 26, 2018

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85

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...

go_editor

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go_editor asked Feb 13, 2020

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86

GATE2014-2-23
The average spacing between vehicles in a traffic stream is $50$ m, then the density (in veh/km) of the stream is _______

The average spacing between vehicles in a traffic stream is $50$ m, then the density (in veh/km) of the stream is _______

Milicevic3306

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Milicevic3306 asked Mar 25, 2018

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87

GATE2014-1-51
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 (assume $g=9.81 \: m/s^2$), is _____ seconds.

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...

Milicevic3306

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Milicevic3306 asked Mar 25, 2018

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88

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

13.0k points

Arjun asked Feb 19, 2021

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89

GATE2017 CE-1: 34
The radius of a horizontal circular curve on a highway is $120$ m. The design speed is $60$ km/hour, and the design coefficient of lateral friction between the tyre and road surface is $0.15$. The estimated value of superrelevation required (if full lateral friction is assumed to develop), and the ... $\dfrac{1}{11.6} \text{ and } 0.24 \\$ $\dfrac{1}{12.9} \text{ and } 0.24$

The radius of a horizontal circular curve on a highway is $120$ m. The design speed is $60$ km/hour, and the design coefficient of lateral friction between the tyre and r...

Milicevic3306

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Milicevic3306 asked Mar 26, 2018

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90

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

13.0k points

Arjun asked Feb 19, 2021

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91

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...

go_editor

5.3k points

go_editor asked Feb 27, 2020

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92

GATE2016-1-21
During a forensic investigation of pavement failure, an engineer reconstructed the graphs P, Q, R, and S, using partial and damaged old reports. Theoretically plausible correct graphs according to the ‘Marshall mixture design output’ are P, Q, R P, Q, S Q, R, S R, S, P

During a forensic investigation of pavement failure, an engineer reconstructed the graphs P, Q, R, and S, using partial and damaged old reports.Theoretically plausible co...

Milicevic3306

11.9k points

Milicevic3306 asked Mar 27, 2018

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93

GATE2015-2-52
Match the information related to tests on aggregates given in Group - I with that in Group - II. ... $P - 4; Q - 1; R - 3; S - 2;$ $P - 3; Q - 4; R - 2; S - 1;$

Match the information related to tests on aggregates given in Group – I with that in Group – II.$\begin{array}{ll} \text{Group – I} & \text{Group – II} \\ P. \tex...

Milicevic3306

11.9k points

Milicevic3306 asked Mar 26, 2018

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94

GATE2014-2-55
The chainage of the intersection point of two straight is $1585.60$ m and the angle of intersection is $140^{\circ}$. If the radius of a circular curve is $600.00$ m, the tangent distance (in m) and length of the curve (in m), respectively are $418.88$ and $1466.08$ $218.38$ and $1648.49$ $218.38$ and $418.88$ $418.88$ and $218.38$

The chainage of the intersection point of two straight is $1585.60$ m and the angle of intersection is $140^{\circ}$. If the radius of a circular curve is $600.00$ m, the...

Milicevic3306

11.9k points

Milicevic3306 asked Mar 25, 2018

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95

GATE2015-1-52
On a circular curve, the rate of superelevation is $e$. While negotiating the curve a vehicle comes to a stop. It is seen that the stopped vehicle does not slide inwards (in the radial direction). The coefficient of side friction is $f$. Which of the following is true: $e \leq f$ $f < e < 2f$ $e \geq 2f$ none of the above

On a circular curve, the rate of superelevation is $e$. While negotiating the curve a vehicle comes to a stop. It is seen that the stopped vehicle does not slide inwards ...

Milicevic3306

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Milicevic3306 asked Mar 26, 2018

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96

GATE2018 CE-1: 15
The speed-density relationship for a road section is shown in the figure. The shape of the flow-density relationship is piecewise linear parabolic initially linear than parabolic initially parabolic than linear

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...

gatecse

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gatecse asked Feb 17, 2018

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97

GATE2016-1-53
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 $80$ kmph. The mechanical widening and psychological widening required at $60$ kmph are designated as $w_{me,60}$ and $w_{ps,60}$, ... $1.19 \:m, 0.50 \:m, 0.89 \:m, \text{ and } 0.50 \:m$

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 $...

Milicevic3306

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Milicevic3306 asked Mar 27, 2018

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98

GATE2014-2-52
On a section of a highway the speed-density relationship is linear an is given by $v=\big[80 – \dfrac{2}{3}k\big]$; where $v$ is in km/h and $k$ is in veh/km. The capacity (in veh/h) of this section of the highway would be $1200$ $2400$ $4800$ $9600$

On a section of a highway the speed-density relationship is linear an is given by $v=\big[80 – \dfrac{2}{3}k\big]$; where $v$ is in km/h and $k$ is in veh/km. The capac...

Milicevic3306

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Milicevic3306 asked Mar 25, 2018

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99

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}\...

go_editor

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go_editor asked Feb 13, 2020

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100

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

13.0k points

Arjun asked Feb 19, 2021

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101

GATE2014-2-53
A pre-timed four phase signal has critical lane flow rate for the first three phases as $200$, $187$ and $210$ veh/hr with saturation flow rate of $1800$ veh/hr/lane for al phases. The lost time is given as $4$ seconds for each phase. If the cycle length is $60$ seconds, the effective green time (in seconds) of the fourth phase is ________

A pre-timed four phase signal has critical lane flow rate for the first three phases as $200$, $187$ and $210$ veh/hr with saturation flow rate of $1800$ veh/hr/lane for ...

Milicevic3306

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Milicevic3306 asked Mar 25, 2018

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102

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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103

GATE2014-1-23
The minimum value of $15$ minute peak hour factor on a section of a road is $0.10$ $0.20$ $0.25$ $0.33$

The minimum value of $15$ minute peak hour factor on a section of a road is$0.10$$0.20$$0.25$$0.33$

Milicevic3306

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Milicevic3306 asked Mar 25, 2018