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Recent questions and answers in Transportation Engineering
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votes
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answers
1
GATE2020CE120
In an urban area, a median is provided to separate the opposing stream of traffic. As per $IRC:861983$, the desirable minimum width (in $m$, expressed as integer) of the median, is _______.
asked
Feb 28, 2020
in
Traffic Engineering
by
jothee
(
5.2k
points)
gate2020ce1
trafficengineering
transportationengineering
numericalanswers
0
votes
0
answers
2
GATE2020CE132
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 $5\:(q_4=q_5)$
asked
Feb 28, 2020
in
Transportation Engineering
by
jothee
(
5.2k
points)
gate2020ce1
transportationengineering
trafficengineering
0
votes
0
answers
3
GATE2020CE133
The appropriate design length of a clearway is calculated on the basis of ‘Normal Takeoff’ condition. Which one of the following options correctly depicts the length of the clearway? (Note: None of the options are drawn to scale)
asked
Feb 28, 2020
in
Transportation Engineering
by
jothee
(
5.2k
points)
gate2020ce1
transportationengineering
0
votes
0
answers
4
GATE2020CE145
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 ______.
asked
Feb 28, 2020
in
Traffic Engineering
by
jothee
(
5.2k
points)
gate2020ce1
trafficengineering
transportationengineering
peakhourfactor
numericalanswers
0
votes
0
answers
5
GATE2020 CE29
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
asked
Feb 13, 2020
in
Traffic Engineering
by
jothee
(
5.2k
points)
gate2020ce2
trafficengineering
transportationengineering
signaldesign
0
votes
0
answers
6
GATE2020 CE220
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 __________.
asked
Feb 13, 2020
in
Traffic Engineering
by
jothee
(
5.2k
points)
gate2020ce2
numericalanswers
axleload
trafficengineering
transportationengineering
0
votes
0
answers
7
GATE2020 CE221
$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 __________.
asked
Feb 13, 2020
in
Traffic Engineering
by
jothee
(
5.2k
points)
gate2020ce2
numericalanswers
trafficengineering
transportationengineering
0
votes
0
answers
8
GATE2020 CE231
The flowdensity relationship of traffic on a highway is shown in the figure The correct representation of speeddensity relationship of the traffic on this highway is
asked
Feb 13, 2020
in
Highway Pavements
by
jothee
(
5.2k
points)
gate2020ce2
highwaypavements
transportationengineering
0
votes
0
answers
9
GATE2020 CE232
$\text{GroupI}$ gives a list of test methods for evaluating properties of aggregates. $\text{GroupII}$ ... $P2; Q1; R4; S3$ $P3; Q4; R1; S2$ $P2; Q4; R3; S1$
asked
Feb 13, 2020
in
Transportation Engineering
by
jothee
(
5.2k
points)
gate2020ce2
testmethodsanditsproperties
transportationengineering
0
votes
0
answers
10
GATE2020 CE233
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 $36$ $39$ $42$ $48$
asked
Feb 13, 2020
in
Transportation Infrastructure
by
jothee
(
5.2k
points)
gate2020ce2
transportationinfrastructure
transportationengineering
airportrunwaylength
0
votes
0
answers
11
GATE2020 CE245
The design speed of a twolane twoway 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 ________.
asked
Feb 13, 2020
in
Traffic Engineering
by
jothee
(
5.2k
points)
gate2020ce2
numericalanswers
trafficengineering
transportationengineering
urbanroads
0
votes
0
answers
12
GATE2017 CE211
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 $e= 1.676 \dfrac{V^2}{R} \\$ $e= 1.315 \dfrac{V^2}{R} \\$ $e= 0.80 \dfrac{V^2}{R} \\$ $e= 0.60 \dfrac{V^2}{R}$
asked
Aug 7, 2019
in
Transportation Infrastructure
by
gatecse
(
4k
points)
gate2017ce2
transportationinfrastructure
transportationengineering
geometricdesignofrailwaytrack
0
votes
0
answers
13
GATE2017 CE212
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
asked
Aug 7, 2019
in
Transportation Engineering
by
gatecse
(
4k
points)
gate2017ce2
transportationengineering
0
votes
0
answers
14
GATE2017 CE236
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
asked
Aug 7, 2019
in
Traffic Engineering
by
gatecse
(
4k
points)
gate2017ce2
trafficengineering
transportationengineering
0
votes
0
answers
15
GATE2017 CE237
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 $0.6$
asked
Aug 7, 2019
in
Transportation Engineering
by
gatecse
(
4k
points)
gate2017ce2
transportationengineering
shearstrength
soilmechanics
geotechnicalengineering
0
votes
0
answers
16
GATE2017 CE245
The figure shows a Utube having a $5 \: mm \times 5 mm$ square crosssection filled with mercury (specific gravity $13.6$) up to a height of $20 $ cm in each limb (open to atmosphere) If $5 \: cm^3$ of water is added to the right limb, the new height (in cm, up to two decimal places) of mercury in the LEFT limb will be ________
asked
Aug 7, 2019
in
Transportation Infrastructure
by
gatecse
(
4k
points)
gate2017ce2
numericalanswers
transportationinfrastructure
transportationengineering
crosssectionalelements
0
votes
0
answers
17
GATE2017 CE254
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 _______
asked
Aug 7, 2019
in
Transportation Infrastructure
by
gatecse
(
4k
points)
gate2017ce2
numericalanswers
transportationinfrastructure
transportationengineering
geometricdesignofhighways
0
votes
0
answers
18
GATE2017 CE255
An observer standing on the deck of a ship just sees the top of a lighthouse. The top of the lighthouse is $40$ m above the sea level and the height of the observer’s eye is $5$ m above the sea level. The distance $9$ in km, up to one decimal place) of teh observer from the lighthouse is __________
asked
Aug 7, 2019
in
Transportation Engineering
by
gatecse
(
4k
points)
gate2017ce2
numericalanswers
transportationengineering
0
votes
0
answers
19
GATE2019 CE1: 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 ... $\dfrac{0.02 \: G}{f_r+0.01 \:G} \times 100 \\$ $\dfrac{2f_r}{f_r+0.01 \:G} \times 100$
asked
Feb 14, 2019
in
Transportation Engineering
by
Arjun
(
8.7k
points)
gate2019ce1
transportationengineering
0
votes
0
answers
20
GATE2019 CE1: 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 $L \alpha (T_tT_b)$ $E \alpha (T_tT_b)$ $\dfrac{E \alpha (T_tT_b)}{2}\\$ zero
asked
Feb 14, 2019
in
Highway Pavements
by
Arjun
(
8.7k
points)
gate2019ce1
highwaypavements
concretepavements
transportationengineering
0
votes
0
answers
21
GATE2019 CE1: 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 _______
asked
Feb 14, 2019
in
Traffic Engineering
by
Arjun
(
8.7k
points)
gate2019ce1
numericalanswers
trafficengineering
transportationengineering
peakhourfactor
0
votes
0
answers
22
GATE2019 CE1: 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 ____________
asked
Feb 14, 2019
in
Transportation Engineering
by
Arjun
(
8.7k
points)
gate2019ce1
numericalanswers
transportationengineering
transportationinfrastructure
horizontalandverticalalignments
0
votes
0
answers
23
GATE2019 CE1: 45
Average free flow speed and the jam density observed on a road stretch are $60 \: km/h$ and $120$ vehicles/km, respectively. For a linear speeddensity relationship, the maximum flow on the road stretch (in vehicles/h) is _______
asked
Feb 14, 2019
in
Transportation Engineering
by
Arjun
(
8.7k
points)
gate2019ce1
numericalanswers
transportationengineering
trafficengineering
urbanroads
0
votes
0
answers
24
GATE2019 CE1: 46
Traffic on a highway is moving at a rate of $360$ vehicles per hour at a location. If the number of vehicles arriving on this highway follows Poisson distribution, the probability (round off to $2$ decimal places) that the headway between successive vehicles lies between $6$ and $10$ seconds is ________
asked
Feb 14, 2019
in
Transportation Engineering
by
Arjun
(
8.7k
points)
gate2019ce1
numericalanswers
transportationengineering
trafficengineering
highwaypavements
0
votes
0
answers
25
GATE2019 CE2: 11
Structural failures considered in the mechanistic method of bituminous pavement design are Fatigue and Rutting Fatigue and Shear Rutting and Shear Shear and Slippage
asked
Feb 12, 2019
in
Highway Pavements
by
Arjun
(
8.7k
points)
gate2019ce2
highwaypavements
transportationengineering
bituminouspavementdesign
0
votes
0
answers
26
GATE2019 CE2: 19
The speeddensity relationship in a midblock section of a highway follows the Greenshield’s model. If the free flow speed is $v_f$ and the jam density is $k_j$, the maximum flow observed on this section is $v_fk_j \\$ $\dfrac{v_fk_j}{2} \\$ $\dfrac{v_fk_j}{4} \\$ $\dfrac{v_fk_j}{8}$
asked
Feb 12, 2019
in
Transportation Engineering
by
Arjun
(
8.7k
points)
gate2019ce2
transportationengineering
highwaypavements
0
votes
0
answers
27
GATE2019 CE2: 23
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 $10 \: m/s^2$. On applying brakes to reach a speed of $10 \: m/s$, the required braking distance (in m, round off to nearest integer) along the horizontal, is ______
asked
Feb 12, 2019
in
Transportation Engineering
by
Arjun
(
8.7k
points)
gate2019ce2
numericalanswers
transportationengineering
trafficengineering
0
votes
0
answers
28
GATE2019 CE2: 34
A flexible pavement has the following class of loads during a particular hour of the day. $80$ buses with $2$ axles ( each axle load of $40 \: kN$) $160$ trucks with $2$axles (front and rear axle loads of $40 \: kN$ and $80 \: kN$, respectively) The equivalent standard axle load repetitions for this vehicle combination as per $IRC:372012$ would be $180$ $240$ $250$ $320$
asked
Feb 12, 2019
in
Transportation Engineering
by
Arjun
(
8.7k
points)
gate2019ce2
transportationengineering
highwaypavements
0
votes
0
answers
29
GATE2019 CE2: 44
The uniform arrival and uniform service rates observed on an approach road to a signalized intersection are $20$ and $50$ vehicles/minute, respectively. For this signal, the red time is $30 \: s$, the effective green time is $30 \: s$, and the cycle ... average delay per vehicle using the approach road during a cycle length (in $s$, round off to $2$ decimal places) is __________
asked
Feb 12, 2019
in
Traffic Engineering
by
Arjun
(
8.7k
points)
gate2019ce2
numericalanswers
trafficengineering
transportationengineering
0
votes
0
answers
30
GATE2019 CE2: 45
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 calculating the cant, consider the gauge as centretocentre distance between ... (in $mm$, round off to $1$ decimal place) with respect to the centretocentre distance between the rail heads is _____________
asked
Feb 12, 2019
in
Transportation Infrastructure
by
Arjun
(
8.7k
points)
gate2019ce2
numericalanswers
transportationinfrastructure
transportationengineering
railwaytrack
0
votes
0
answers
31
GATE2019 CE2: 46
The speeddensity relationship of a highway is given as $u = 100 – 0.5 \: k$ where, $u=$ speed in $km$ per hour, $k=$ density in vehicles per $km$. The maximum flow (in vehicles per hour, round off to the nearest integer) is _______
asked
Feb 12, 2019
in
Transportation Engineering
by
Arjun
(
8.7k
points)
gate2019ce2
numericalanswers
transportationengineering
0
votes
0
answers
32
GATE2016221
In the context of the $IRC \: 582011$ guidelines for rigid pavement design, consider the following pair of statements. Radius of relative stiffness is directly related to modulus of elasticity of concrete and inversely related to Poisson's ratio Radius of relative stiffness is directly ... is correct? I. True; II: True I. False; II: False I. True; II: False I. False; II: True
asked
Mar 28, 2018
in
Highway Pavements
by
Milicevic3306
(
11.9k
points)
gate2016ce2
highwaypavements
transportationengineering
designofflexiblepavement
irc582011
0
votes
0
answers
33
GATE2016222
If the total number of commercial vehicles per day ranges from $3000$ to $6000$, the minimum percentage of commercial traffic to be surveyed for axle load is $15$ $20$ $25$ $30$
asked
Mar 28, 2018
in
Traffic Engineering
by
Milicevic3306
(
11.9k
points)
gate2016ce2
trafficengineering
transportationengineering
axleload
surveys
0
votes
0
answers
34
GATE2016253
The critical flow ratios for a threephase signal are found to be $0.30, 0.25$ and $0.25$. The total time lost in the cycle is $10 \: s$. Pedestrian crossings at this junction are not significant. The respective Green times (expressed in seconds and rounded off to the nearest integer) for the three phases are $34, 28$, and $28$ $40, 25$, and $25$ $40, 30$, and $30$ $50, 25$, and $25$
asked
Mar 28, 2018
in
Traffic Engineering
by
Milicevic3306
(
11.9k
points)
gate2016ce2
trafficengineering
transportationengineering
signaldesign
0
votes
0
answers
35
GATE2016254
A motorist traveling at $100$ km/h on a highway needs to take the next exit, which has a speed limit of $50$ km/h. The section of the roadway before the ramp entry has a downgrade of $3 \%$ and coefficient of friction $(f)$ is $0.35$. In order to enter the ramp at the maximum allowable speed limit, the braking distance (expressed in m) from the exit ramp is __________
asked
Mar 28, 2018
in
Traffic Engineering
by
Milicevic3306
(
11.9k
points)
gate2016ce2
numericalanswers
trafficengineering
transportationengineering
speed
0
votes
0
answers
36
GATE2016255
A tall tower was photographed from an elevation of $700$ m above the datum. The radial distances of the top and bottom of the tower from the principal points are $112.50$ mm and $82.40$ mm, respectively. If the bottom of the tower is at an elevation $250$ m above the datum, then the height (expressed in m) of the tower is _________
asked
Mar 28, 2018
in
Transportation Engineering
by
Milicevic3306
(
11.9k
points)
gate2016ce2
numericalanswers
transportationengineering
0
votes
0
answers
37
GATE2016121
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
asked
Mar 28, 2018
in
Transportation Engineering
by
Milicevic3306
(
11.9k
points)
gate2016ce1
highwaypavement
transportationengineering
pavementfailure
marshallmixture
0
votes
0
answers
38
GATE2016122
In a onelane oneway homogeneous traffic stream, the observed average headway is $3.0$ s. The flow (expressed in vehicles/hr) in this traffic stream is ________
asked
Mar 28, 2018
in
Traffic Engineering
by
Milicevic3306
(
11.9k
points)
gate2016ce1
numericalanswers
trafficengineering
transportationengineering
trafficstream
0
votes
0
answers
39
GATE2016153
A two lane, oneway 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 $w_{ps,60}$, ... $1.19 \:m, 0.50 \:m, 0.89 \:m, \text{ and } 0.50 \:m$
asked
Mar 28, 2018
in
Traffic Engineering
by
Milicevic3306
(
11.9k
points)
gate2016ce1
trafficengineering
transportationengineering
speed
mechanicalandpsychologicalwidening
0
votes
0
answers
40
GATE2016154
While traveling along and against the traffic stream, a moving observer measured the relative flows as $50$ vehicles/hr and $200$ vehicles/hr, respectively. The average speeds of the moving observer while traveling along and against the stream are $20$ km/hr and $30$ km/hr, respectively. The density of the traffic stream (expressed in vehicles/km) is _________
asked
Mar 28, 2018
in
Traffic Engineering
by
Milicevic3306
(
11.9k
points)
gate2016ce1
numericalanswers
trafficengineering
transportationengineering
densityoftrafficstream
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