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Recent questions tagged trafficengineering
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1
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
2
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
3
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
4
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
Traffic Engineering
by
gatecse
(
4k
points)
gate2017ce2
transportationengineering
trafficengineering
trafficcontrol
0
votes
0
answers
5
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
trafficstudiosonflowandspeed
0
votes
0
answers
6
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
7
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
Traffic Engineering
by
Arjun
(
8.7k
points)
gate2019ce1
numericalanswers
transportationengineering
trafficengineering
trafficstudiosonflowandspeed
0
votes
0
answers
8
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
Traffic Engineering
by
Arjun
(
8.7k
points)
gate2019ce1
numericalanswers
transportationengineering
trafficengineering
statisticalanalysisoftrafficdata
0
votes
0
answers
9
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
Traffic Engineering
by
Arjun
(
8.7k
points)
gate2019ce2
transportationengineering
trafficengineering
trafficstudiosonflowandspeed
greenshieldssmodel
0
votes
0
answers
10
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 Infrastructure
by
Arjun
(
8.7k
points)
gate2019ce2
numericalanswers
transportationengineering
trafficengineering
horizontal
alignments
0
votes
0
answers
11
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
trafficstudiosonflowandspeed
0
votes
0
answers
12
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
staticalanalysisoftrafficdata
0
votes
0
answers
13
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
14
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
15
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
16
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
trafficstudiosonflowandspeed
0
votes
0
answers
17
GATE2017 CE1: 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 ___________
asked
Mar 26, 2018
in
Traffic Engineering
by
Milicevic3306
(
11.9k
points)
gate2017ce1
numericalanswers
trafficengineering
transportationengineering
poissondistribution
0
votes
0
answers
18
GATE2017 CE1: 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
asked
Mar 26, 2018
in
Traffic Engineering
by
Milicevic3306
(
11.9k
points)
gate2017ce1
trafficengineering
transportationengineering
traveltimedelay
staticalanalysisoftrafficdata
0
votes
0
answers
19
GATE2017 CE1: 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 ... $\dfrac{1}{11.6} \text{ and } 0.24 \\$ $\dfrac{1}{12.9} \text{ and } 0.24$
asked
Mar 26, 2018
in
Traffic Engineering
by
Milicevic3306
(
11.9k
points)
gate2017ce1
trafficengineering
transportationengineering
trafficstudiosonflowandspeed
0
votes
0
answers
20
GATE2015222
A superspeedway in New Delhi has among the highest superelevation 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 $1.761$ $0.176$ $0.253$ $2.530$
asked
Mar 26, 2018
in
Traffic Engineering
by
Milicevic3306
(
11.9k
points)
gate2015ce2
trafficengineering
transportationengineering
statisticalanalysisoftrafficdata
0
votes
0
answers
21
GATE2015223
The following statements are made related to the lengths of turning lanes at signalised intersections: $1.5$ times the average number of vehicles (by vehicle type) that would store in turning lane per cycle during the peak hour. $2$ times the average number of vehicles (by vehicle type) ... lanes is: Maximum of (ii) and (iii) Maximum of (i) and (iii) Average of (i) and (iii) Only (iv)
asked
Mar 26, 2018
in
Traffic Engineering
by
Milicevic3306
(
11.9k
points)
gate2015ce2
trafficengineering
transportationengineering
signaldesign
typesofintersections
0
votes
0
answers
22
GATE2015251
The relation between speed $u$ (in km/h) and density $k$ (number of vehicles/km) for a traffic stream on a road is $u=700.7k$. The capacity on this road is _________ vph (vehicles/hour).
asked
Mar 26, 2018
in
Traffic Engineering
by
Milicevic3306
(
11.9k
points)
gate2015ce2
numericalanswers
trafficengineering
transportationengineering
trafficstream
0
votes
0
answers
23
GATE2015123
Which of the following statements CANNOT be used to describe free flow speed $(u_f)$ of a traffic stream? $(u_f)$ is the speed when flow is negligible $(u_f)$ is the speed when density is negligible $(u_f)$ is affected by geometry and surface conditions of the road $(u_f)$ is the speed at which flow is maximum and density is optimum
asked
Mar 26, 2018
in
Traffic Engineering
by
Milicevic3306
(
11.9k
points)
gate2015ce1
trafficengineering
transportationengineering
trafficstream
0
votes
0
answers
24
GATE2015151
The accelerationtime relationship for a vehicle subjected to nonuniform acceleration is, $\dfrac{dv}{dt} = (\alpha\:  \beta v_0) e^{  \beta t}$ where, $v$ is the speed in m/s, $t$ is the time in s, $\alpha$ and $\beta$ are parameters, and $v_0$ is the initial speed ... $\dfrac{dv}{dt}=1.3 m/s^2$ at $t=3$s, the distance (in m) travelled by the vehicle in $35$ s is ________
asked
Mar 26, 2018
in
Traffic Engineering
by
Milicevic3306
(
11.9k
points)
gate2015ce1
numericalanswers
trafficengineering
transportationengineering
speed
accelerationtimerelationship
0
votes
0
answers
25
GATE2015152
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
asked
Mar 26, 2018
in
Traffic Engineering
by
Milicevic3306
(
11.9k
points)
gate2015ce1
transportationengineering
trafficengineering
accidentstudy
0
votes
0
answers
26
GATE2015153
A sign is required to be put up asking drivers to slow down to $30$ km/h before entering Zone $Y$ (see figure). On this road, vehicles require $174$ m to slow down to $30$ km/h (the distance of $174$ m includes the distance travelled during the perception ... even a $6/9$ vision driver can slow down to $30$ km/h before entering the zone. The minimum value of $x$ is ________ m.
asked
Mar 26, 2018
in
Traffic Engineering
by
Milicevic3306
(
11.9k
points)
gate2015ce1
numericalanswers
transportationengineering
trafficengineering
trafficsigns
0
votes
0
answers
27
GATE2014251
A student riding a bicycle on a $5$ km oneway street takes $40$ minutes to reach home. The student stopped for $15$ minutes during this ride. $60$ vehicles overtook the student (assume the number of vehicles overtaken by the student is zero) during the ride and $45$ vehicles while the student stopped. The speed of vehicle stream on that road (in km/hr) is $7.5$ $12$ $40$ $60$
asked
Mar 26, 2018
in
Traffic Engineering
by
Milicevic3306
(
11.9k
points)
gate2014ce2
transportationengineering
trafficengineering
trafficstudiosonflowandspeed
0
votes
0
answers
28
GATE2014253
A pretimed 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 ________
asked
Mar 26, 2018
in
Traffic Engineering
by
Milicevic3306
(
11.9k
points)
gate2014ce2
numericalanswers
trafficengineering
transportationengineering
signaldesign
0
votes
0
answers
29
GATE2014255
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 $218.38$
asked
Mar 26, 2018
in
Traffic Engineering
by
Milicevic3306
(
11.9k
points)
gate2014ce2
trafficengineering
transportationengineering
typesofintersections
0
votes
0
answers
30
GATE2014223
The average spacing between vehicles in a traffic stream is $50$ m, then the density (in veh/km) of the stream is _______
asked
Mar 26, 2018
in
Traffic Engineering
by
Milicevic3306
(
11.9k
points)
gate2014ce2
numericalanswers
trafficengineering
transportationengineering
trafficstream
0
votes
0
answers
31
GATE2014150
A traffic survey conducted on a road yields an average daily traffic count of $5000$ ... the vehicle damage factor (VDF) is calculated from the above data, the design traffic (in million standard axle load, MSA) is ________
asked
Mar 26, 2018
in
Traffic Engineering
by
Milicevic3306
(
11.9k
points)
gate2014ce1
numericalanswers
trafficengineering
transportationengineering
staticalanalysisoftrafficdata
0
votes
0
answers
32
GATE2014152
The speeddensity $(uk)$ relationship on a single lane road with unidirectional flow is $u=700.77k$, where $u$ is in km/hr and $k$ is in veh/km. The capacity of the road (in veh/hr) is ___________
asked
Mar 26, 2018
in
Traffic Engineering
by
Milicevic3306
(
11.9k
points)
gate2014ce1
numericalanswers
trafficengineering
transportationengineering
speeddensityrelationship
0
votes
0
answers
33
GATE2014153
An isolated threephase traffic signal is designed by Webster’s method. The critical flow ratios for three phases are $0.20$, $0.30$, and $0.25$ respectively, and lost time per phase is $4$ seconds. The optimum cycle length (in seconds) is ____________
asked
Mar 26, 2018
in
Traffic Engineering
by
Milicevic3306
(
11.9k
points)
gate2014ce1
numericalanswers
trafficengineering
transportationengineering
webster'smethod
0
votes
0
answers
34
GATE2014129
A traffic office imposes on an average $5$ number of penalties daily on traffic violators. Assume that the number of penalties on different days is independent and follows a Poisson distribution. The probability that there will be less than $4$ penalties in a day is ___________
asked
Mar 26, 2018
in
Traffic Engineering
by
Milicevic3306
(
11.9k
points)
gate2014ce1
numericalanswers
trafficengineering
transportationengineering
probability
poissondistribution
0
votes
0
answers
35
GATE2014123
The minimum value of $15$ minute peak hour factor on a section of a road is $0.10$ $0.20$ $0.25$ $0.33$
asked
Mar 26, 2018
in
Traffic Engineering
by
Milicevic3306
(
11.9k
points)
gate2014ce1
trafficengineering
transportationengineering
peakhourfactor
0
votes
0
answers
36
GATE Civil 2012  Question: 44
A pavement designer has arrived at a design traffic of $100$ million standard axles for a newly developing national highway as per $IRC:37$ guidelines using the following data: design life $=15$ years, commercial vehicle count before pavement construction $=4500$ vehicles/day, ... $1.53$ $2.24$ $3.66$ $4.14$
asked
Mar 25, 2018
in
Traffic Engineering
by
Milicevic3306
(
11.9k
points)
gate2012ce
trafficengineering
transportationengineering
trafficgrowthrate
statisticalanalysisoftrafficdata
0
votes
0
answers
37
GATE Civil 2012  Question: 46
A twolane urban road with oneway traffic has a maximum capacity of $1800$ vehicles/hour. Under the jam condition, the average length occupied by the vehicles is $5.0 \: m$. The speed versus density relationship is linear. For a traffic volume of $1000$ vehicles/hour, the density (in vehicles/km) is $52$ $58$ $67$ $75$
asked
Mar 25, 2018
in
Traffic Engineering
by
Milicevic3306
(
11.9k
points)
gate2012ce
trafficengineering
transportationengineering
trafficvolume
0
votes
0
answers
38
GATE Civil 2012  Question: 22
Two major roads with two lanes each are crossing in an urban area to form an uncontrolled intersection. The number of conflict points when both roads are oneway is “X” and when both roads are twoway is “Y”. The ratio of X and Y is $0.25$ $0.33$ $0.50$ $0.75$
asked
Mar 25, 2018
in
Traffic Engineering
by
Milicevic3306
(
11.9k
points)
gate2012ce
trafficengineering
transportationengineering
urbanroads
0
votes
1
answer
39
GATE2018 CE2: 54
A $7.5$ m wide twolane 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 $\text{IRC:}731980$. 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 ________
asked
Feb 17, 2018
in
Traffic Engineering
by
gatecse
(
4k
points)
gate2018ce2
numericalanswers
trafficengineering
transportationengineering
urbanroads
0
votes
0
answers
40
GATE2018 CE2: 53
The space mean speed (kmph) and density (vehicles/km) of a traffic stream are linearly related. The free flow speed and jam density are $80$ kmph and $100$ vehicles/km respectively. The traffic flow (in vehicles/h, up to one decimal place) corresponding to a speed of $40$ kmph is ____
asked
Feb 17, 2018
in
Traffic Engineering
by
gatecse
(
4k
points)
gate2018ce2
numericalanswers
trafficengineering
transportationengineering
trafficstudiosonflowandspeed
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