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Recent questions tagged transportation-engineering
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1
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 $5\:(q_4=q_5)$
go_editor
asked
in
Transportation Engineering
Feb 28, 2020
by
go_editor
5.3k
points
gate2020-ce-1
transportation-engineering
traffic-engineering
0
votes
0
answers
2
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
go_editor
asked
in
Traffic Engineering
Feb 13, 2020
by
go_editor
5.3k
points
gate2020-ce-2
traffic-engineering
transportation-engineering
signal-design
0
votes
0
answers
3
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 __________.
go_editor
asked
in
Traffic Engineering
Feb 13, 2020
by
go_editor
5.3k
points
gate2020-ce-2
numerical-answers
axle-load
traffic-engineering
transportation-engineering
0
votes
0
answers
4
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
go_editor
asked
in
Highway Pavements
Feb 13, 2020
by
go_editor
5.3k
points
gate2020-ce-2
highway-pavements
transportation-engineering
0
votes
0
answers
5
GATE2020 CE-2-32
$\text{Group-I}$ gives a list of test methods for evaluating properties of aggregates. $\text{Group-II}$ ... $P-2; Q-1; R-4; S-3$ $P-3; Q-4; R-1; S-2$ $P-2; Q-4; R-3; S-1$
go_editor
asked
in
Transportation Engineering
Feb 13, 2020
by
go_editor
5.3k
points
gate2020-ce-2
test-methods-and-its-properties
transportation-engineering
0
votes
0
answers
6
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 $e= 1.676 \dfrac{V^2}{R} \\$ $e= 1.315 \dfrac{V^2}{R} \\$ $e= 0.80 \dfrac{V^2}{R} \\$ $e= 0.60 \dfrac{V^2}{R}$
gatecse
asked
in
Transportation Infrastructure
Aug 7, 2019
by
gatecse
4.0k
points
gate2017-ce-2
transportation-infrastructure
transportation-engineering
geometric-design-of-railway-track
0
votes
0
answers
7
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
gatecse
asked
in
Traffic Engineering
Aug 7, 2019
by
gatecse
4.0k
points
gate2017-ce-2
transportation-engineering
traffic-engineering
traffic-control
0
votes
0
answers
8
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
gatecse
asked
in
Traffic Engineering
Aug 7, 2019
by
gatecse
4.0k
points
gate2017-ce-2
traffic-engineering
transportation-engineering
traffic-studios-on-flow-and-speed
0
votes
0
answers
9
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 $0.6$
gatecse
asked
in
Transportation Infrastructure
Aug 7, 2019
by
gatecse
4.0k
points
gate2017-ce-2
transportation-engineering
transportation-infrastructure
geometric-design-of-highways
0
votes
0
answers
10
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 _______
gatecse
asked
in
Transportation Infrastructure
Aug 7, 2019
by
gatecse
4.0k
points
gate2017-ce-2
numerical-answers
transportation-infrastructure
transportation-engineering
geometric-design-of-highways
0
votes
0
answers
11
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 ... $\dfrac{0.02 \: G}{f_r+0.01 \:G} \times 100 \\$ $\dfrac{2f_r}{f_r+0.01 \:G} \times 100$
Arjun
asked
in
Transportation Infrastructure
Feb 14, 2019
by
Arjun
11.6k
points
gate2019-ce-1
transportation-engineering
horizontal-and-vertical-alignments
0
votes
0
answers
12
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
Arjun
asked
in
Highway Pavements
Feb 14, 2019
by
Arjun
11.6k
points
gate2019-ce-1
highway-pavements
concrete-pavements
transportation-engineering
0
votes
0
answers
13
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 _______
Arjun
asked
in
Traffic Engineering
Feb 14, 2019
by
Arjun
11.6k
points
gate2019-ce-1
numerical-answers
traffic-engineering
transportation-engineering
peak-hour-factor
0
votes
0
answers
14
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 __________
Arjun
asked
in
Highway Pavements
Feb 14, 2019
by
Arjun
11.6k
points
gate2019-ce-1
numerical-answers
transportation-engineering
highway-pavements
highway-material-tests
0
votes
0
answers
15
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 ____________
Arjun
asked
in
Transportation Engineering
Feb 14, 2019
by
Arjun
11.6k
points
gate2019-ce-1
numerical-answers
transportation-engineering
transportation-infrastructure
horizontal-and-vertical-alignments
0
votes
0
answers
16
GATE2019 CE-1: 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 speed-density relationship, the maximum flow on the road stretch (in vehicles/h) is _______
Arjun
asked
in
Traffic Engineering
Feb 14, 2019
by
Arjun
11.6k
points
gate2019-ce-1
numerical-answers
transportation-engineering
traffic-engineering
traffic-studios-on-flow-and-speed
0
votes
0
answers
17
GATE2019 CE-1: 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 ________
Arjun
asked
in
Traffic Engineering
Feb 14, 2019
by
Arjun
11.6k
points
gate2019-ce-1
numerical-answers
transportation-engineering
traffic-engineering
statistical-analysis-of-traffic-data
0
votes
0
answers
18
GATE2019 CE-2: 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
Arjun
asked
in
Highway Pavements
Feb 12, 2019
by
Arjun
11.6k
points
gate2019-ce-2
highway-pavements
transportation-engineering
bituminous-pavement-design
0
votes
0
answers
19
GATE2019 CE-2: 19
The speed-density relationship in a mid-block 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 $v_fk_j \\$ $\dfrac{v_fk_j}{2} \\$ $\dfrac{v_fk_j}{4} \\$ $\dfrac{v_fk_j}{8}$
Arjun
asked
in
Traffic Engineering
Feb 12, 2019
by
Arjun
11.6k
points
gate2019-ce-2
transportation-engineering
traffic-engineering
traffic-studios-on-flow-and-speed
greenshieldss-model
0
votes
0
answers
20
GATE2019 CE-2: 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 ______
Arjun
asked
in
Transportation Infrastructure
Feb 12, 2019
by
Arjun
11.6k
points
gate2019-ce-2
numerical-answers
transportation-engineering
traffic-engineering
horizontal
-alignments
0
votes
0
answers
21
GATE2019 CE-2: 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 $IRC:37-2012$ would be $180$ $240$ $250$ $320$
Arjun
asked
in
Highway Pavements
Feb 12, 2019
by
Arjun
11.6k
points
gate2019-ce-2
transportation-engineering
highway-pavements
pavement-using-irc-codes
0
votes
0
answers
22
GATE2019 CE-2: 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 __________
Arjun
asked
in
Traffic Engineering
Feb 12, 2019
by
Arjun
11.6k
points
gate2019-ce-2
numerical-answers
traffic-engineering
transportation-engineering
traffic-studios-on-flow-and-speed
0
votes
0
answers
23
GATE2019 CE-2: 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 centre-to-centre distance between ... (in $mm$, round off to $1$ decimal place) with respect to the centre-to-centre distance between the rail heads is _____________
Arjun
asked
in
Transportation Infrastructure
Feb 12, 2019
by
Arjun
11.6k
points
gate2019-ce-2
numerical-answers
transportation-infrastructure
transportation-engineering
railway-track
0
votes
0
answers
24
GATE2019 CE-2: 46
The speed-density 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 _______
Arjun
asked
in
Transportation Engineering
Feb 12, 2019
by
Arjun
11.6k
points
gate2019-ce-2
numerical-answers
transportation-engineering
0
votes
0
answers
25
GATE2016-2-21
In the context of the $IRC \: 58-2011$ 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
Milicevic3306
asked
in
Highway Pavements
Mar 28, 2018
by
Milicevic3306
11.9k
points
gate2016-ce-2
highway-pavements
transportation-engineering
design-of-flexible-pavement
irc-58-2011
0
votes
0
answers
26
GATE2016-2-22
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 $15$ $20$ $25$ $30$
Milicevic3306
asked
in
Traffic Engineering
Mar 28, 2018
by
Milicevic3306
11.9k
points
gate2016-ce-2
traffic-engineering
transportation-engineering
axle-load
surveys
statical-analysis-of-traffic-data
0
votes
0
answers
27
GATE2016-2-53
The critical flow ratios for a three-phase 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 $25$
Milicevic3306
asked
in
Traffic Engineering
Mar 28, 2018
by
Milicevic3306
11.9k
points
gate2016-ce-2
traffic-engineering
transportation-engineering
signal-design
0
votes
0
answers
28
GATE2016-2-54
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 __________
Milicevic3306
asked
in
Traffic Engineering
Mar 28, 2018
by
Milicevic3306
11.9k
points
gate2016-ce-2
numerical-answers
traffic-engineering
transportation-engineering
speed
0
votes
0
answers
29
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
Milicevic3306
asked
in
Transportation Engineering
Mar 28, 2018
by
Milicevic3306
11.9k
points
gate2016-ce-1
highway-pavement
transportation-engineering
pavement-failure
marshall-mixture
0
votes
0
answers
30
GATE2016-1-22
In a one-lane one-way homogeneous traffic stream, the observed average headway is $3.0$ s. The flow (expressed in vehicles/hr) in this traffic stream is ________
Milicevic3306
asked
in
Traffic Engineering
Mar 28, 2018
by
Milicevic3306
11.9k
points
gate2016-ce-1
numerical-answers
traffic-engineering
transportation-engineering
traffic-stream
0
votes
0
answers
31
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 $w_{ps,60}$, ... $1.19 \:m, 0.50 \:m, 0.89 \:m, \text{ and } 0.50 \:m$
Milicevic3306
asked
in
Transportation Infrastructure
Mar 28, 2018
by
Milicevic3306
11.9k
points
gate2016-ce-1
transportation-engineering
transportation-infrastructure
geometric-design-of-highways
0
votes
0
answers
32
GATE2016-1-54
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 _________
Milicevic3306
asked
in
Traffic Engineering
Mar 28, 2018
by
Milicevic3306
11.9k
points
gate2016-ce-1
numerical-answers
traffic-engineering
transportation-engineering
density-of-traffic-stream
traffic-studios-on-flow-and-speed
0
votes
0
answers
33
GATE2017 CE-1: 16
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 coefficient of side friction $f_{max}$, which one of the following criteria should be satisfied? $e \leq f_{max}$ $e > f_{max}$ no limit on $e$ can be set $e = \dfrac{1-(f_{max})^2}{f_{max}}$
Milicevic3306
asked
in
Transportation Infrastructure
Mar 26, 2018
by
Milicevic3306
11.9k
points
gate2017-ce-1
transportation-engineering
transportation-infrastructure
geometric-design-of-highways
0
votes
0
answers
34
GATE2017 CE-1: 17
A runway is being constructed in a new airport as per the International Civil Aviation Organization (ICAO) recommendations. The elevation and the airport reference temperature of this airport are $535 \: m$ above the mean sea level and $22.65^{\circ}C$, respectively. Consider the ... length of runway corrected for the temperature is $2223 \: m$ $2250 \: m$ $2500 \: m$ $2750 \: m$
Milicevic3306
asked
in
Transportation Infrastructure
Mar 26, 2018
by
Milicevic3306
11.9k
points
gate2017-ce-1
transportation-infrastructure
transportation-engineering
airport-runway-length
0
votes
0
answers
35
GATE2017 CE-1: 18
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 $a$ and $b$ remain constant, irrespective of the distance being measured $a$ ... proportion to the distance being measured and $b$ remains constant Both $a$ and $b$ vary in proportion to the distance being measured
Milicevic3306
asked
in
Transportation Infrastructure
Mar 26, 2018
by
Milicevic3306
11.9k
points
gate2017-ce-1
transportation-infrastructure
transportation-engineering
electronic-distance-measuring-instrument(edmi)
0
votes
0
answers
36
GATE2017 CE-1: 25
Vehicles arriving at an intersection from one of the approach roads follow the Poisson distribution. The mean rate of arrival is $900$ vehicles per hour. If a gap is defined as the time difference between two successive vehicle arrivals (with vehicles assumed to be points), the probability (up to four decimal places) that the gap is greater than $8$ seconds is ___________
Milicevic3306
asked
in
Traffic Engineering
Mar 26, 2018
by
Milicevic3306
11.9k
points
gate2017-ce-1
numerical-answers
traffic-engineering
transportation-engineering
poisson-distribution
0
votes
0
answers
37
GATE2017 CE-1: 32
The following observations are made while testing aggregate for its suitability in pavement construction: Mass of oven-dry aggregate in air $=1000 $ g Mass of saturated surface-dry aggregate in air $=1025 $ g Mass of saturated surface-dry aggregate under water $=625 $ g ... and water absorption $=2.5 \%$ apparent specific gravity of aggregate $=2.5$ and water absorption $=2.4 \%$
Milicevic3306
asked
in
Highway Pavements
Mar 26, 2018
by
Milicevic3306
11.9k
points
gate2017-ce-1
highway-pavements
transportation-engineering
0
votes
0
answers
38
GATE2017 CE-1: 33
The queue length (in number of vehicles) versus time (in seconds) plot for an approach to a signalized intersection with the cycle length of $96$ seconds is shown in the figure (not drawn to scale) At time $t=0$, the light has just turned red. The ... delay per vehicle $=45$ seconds $s=1200$ vph, and for this cycle, the average stopped delay per vehicle $=28.125$ seconds
Milicevic3306
asked
in
Traffic Engineering
Mar 26, 2018
by
Milicevic3306
11.9k
points
gate2017-ce-1
traffic-engineering
transportation-engineering
travel-time-delay
statical-analysis-of-traffic-data
0
votes
0
answers
39
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 ... $\dfrac{1}{11.6} \text{ and } 0.24 \\$ $\dfrac{1}{12.9} \text{ and } 0.24$
Milicevic3306
asked
in
Traffic Engineering
Mar 26, 2018
by
Milicevic3306
11.9k
points
gate2017-ce-1
traffic-engineering
transportation-engineering
traffic-studios-on-flow-and-speed
0
votes
0
answers
40
GATE2015-2-22
A superspeedway in New Delhi has among the highest super-elevation rates of any track on the Indian Grand Prix circuit. The track requires drivers to negotiate turns with a radius of $335$ m and $33^{\circ}$ banking. Given this information, the coefficient of side friction required in order to allow a vehicle to travel at $320$ km/h along the curve is $1.761$ $0.176$ $0.253$ $2.530$
Milicevic3306
asked
in
Traffic Engineering
Mar 26, 2018
by
Milicevic3306
11.9k
points
gate2015-ce-2
traffic-engineering
transportation-engineering
statistical-analysis-of-traffic-data
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