Civil Engineering Transportations MCQ-3
59. If the stopping distance and average length of a vehicle
are 18 m and 6 m respectively, then the theoretical maximum capacity of a
traffic lane at a speed of 10 m/sec is
a) 1500 vehicles per hour
b) 2000 vehicles per hour
c) 2500 vehicles per hour
d) 3000 vehicles per hour
Ans: a
60. Scientific planning of transportation system and mass transit facilities in cities should be based on
a) spot speed data
b) origin and destination data
c) traffic volume data
d) accident data
Ans: b
61. The diagram which shows all important physical conditions of an accident location like roadway limits, bridges, trees and all details of roadway conditions is known as
a) pie chart
b) spot maps
c) condition diagram
d) collision diagram
Ans: c
62. When the speed of traffic flow becomes zero,then
a) traffic density attains maximum value whereas traffic volume becomes zero
b) traffic density and traffic volume both attain maximum value
c) traffic density and traffic volume both become zero
d) traffic density becomes zero whereas traffic volume attains maximum value
Ans: a
63. On a right angled road intersection with two way traffic, the total number of conflict points is
a) 6
b) 11
c) 18
d) 24
Ans: d
64. The background colour of the informatory sign board is
a) red
b) yellow
c) green
d) white
Ans: b
65. Which of the following is indicated by a warning sign ?
a) level crossing
b) no parking
c) end of speed limit
d) overtaking prohibited
Ans: a
66. "Dead Slow" is a
a) regulatory sign
b) warning sign
c) informatory sign
d) none of the above
Ans: a
67. The most efficient traffic signal system is
a) simultaneous system
b) alternate system
c) flexible progressive system
d) simple progressive system
Ans: c
68. The provision of traffic signals at intersections
a) reduces right angled and rear end collisions
b) increases right angled and rear end collisions
c) reduces right angled collisions but may increase rear end collisions
d) reduces rear end collisions but may increase right angled collisions
Ans: c
69. Select the incorrect statement.
a) Stop or red time of a signal is the sum of go and clearance intervals for the cross flow.
b) Go or green time of a signal is the sum of stop and clearance intervals for the cross flow.
c) Clearance time is generally 3 to 5 seconds.
d) The cycle length is normally 40 to 60 seconds for two phase signals.
Ans: b
70. Center line markings are used
a) to designate traffic lanes
b) in roadways meant for two way traffic
c) to indicate that overtaking is not permitted
d) to designate proper lateral placement of vehicles before turning to different directions
Ans: b
71. The particular places where pedestrians are to cross the pavement are properly marked by the pavement marking known
as
a) stop lines
b) turn markings
c) crosswalk lines
d) lane lines
Ans: c
73. The entrance and exit curves of a rotary have
a) equal radii and equal widths of pavement
b) equal radii but pavement width is more at entrance than at exit curve
c) equal pavement widths but radius is more at entrance curve than at exit curve
d) different radii and different widths of pavement
Ans: d
74. When two equally important roads cross roughly at right angles, the suitable shape of central island is
a) circular
b) elliptical
c) tangent
d) turbine
Ans: a
75. The maximum number of vehicles beyond which the rotary may not function efficiently is
a) 500 vehicles per hour
b) 500 vehicles per day
c) 5000 vehicles per hour
d) 5000 vehicles per day
Ans: c
76. A traffic rotary is justified where
a) number of intersecting roads is between 4 and 7
b) space is limited and costly
c) when traffic volume is less than 500 vehicles per hour
d) when traffic volume is more than 5000 vehicles per hour
Ans: a
77. When a number of roads are meeting at a point and only one of the roads is important, then the suitable shape of
rotary is
a) circular
b) tangent
c) elliptical
d) turbine
Ans: b
78. Maximum number of vehicles can be parked with
a) parallel parking
b) 30° angle parking
c) 45° angle parking
d) 90° angle parking
Ans: d
79. When the width of kerb parking space and width of street are limited, generally preferred parking system is
a) parallel parking
b) 45° angle parking
c) 65° angle parking
d) 90° angle parking
Ans: a
80. As per IRC recommendations, the average level of illumination on important roads carrying fast traffic is
a) 10 lux
b) 15 lux
c) 20 lux
d) 30 lux
Ans: d
81. The most economical lighting layout which is suitable for narrow roads is
a) single side lighting
b) staggered system
c) central lighting system
d) none of the above
Ans: a
82. The direct interchange ramp involves
a) diverging to the right side and merging from left
b) diverging to the left side and merging from right
c) diverging to the right side and merging from right
d) diverging to the left side and merging from left
Ans: c
83. In soils having same values of plasticity index, if liquid limit is increased, then
a) compressibility and permeability decrease and dry strength increases
b) compressibility, permeability and dry strength decrease
c) compressibility, permeability and dry strength increase
d) compressibility and permeability increase and dry strength decreases
Ans: d
84. Which of the following tests measures the toughness of road aggregates ?
a) crushing strength test
b) abrasion test
c) impact test
d) shape test
Ans: c
85. Los Angeles testing machine is used to conduct
a) abrasion test
b) impact test
c) attrition test
d) crushing strength test
Ans: a
87. In CBR test the value of CBR is calculated at
a) 2.5 mm penetration only
b) 5.0 mm penetration only
c) 7.5 mm penetration only
d) both 2.5~mm and 5.0 mm penetrations
Ans: d
88. If aggregate impact value is 20 to 30 percent, then it is classified as
a) exceptionally strong
b) strong
c) satisfactory for road surfacing
d) unsuitable for road surfacing
Ans: c
89. The maximum allowable Los Angeles abrasion value for high quality surface course is
a) 10%
b) 20 %
c) 30%
d) 45 %
Ans: c
90. Percentage of free carbon in bitumen is
a) more than that in tar
b) less than that in tar
c) equal to that in tar
d) none of the above
Ans: b
91. The ductility value of bitumen for suitability in road construction should not be less than
a) 30 cm
b) 40 cm
c) 50 cm
d) 60 cm
Ans: c
a) 1500 vehicles per hour
b) 2000 vehicles per hour
c) 2500 vehicles per hour
d) 3000 vehicles per hour
Ans: a
60. Scientific planning of transportation system and mass transit facilities in cities should be based on
a) spot speed data
b) origin and destination data
c) traffic volume data
d) accident data
Ans: b
61. The diagram which shows all important physical conditions of an accident location like roadway limits, bridges, trees and all details of roadway conditions is known as
a) pie chart
b) spot maps
c) condition diagram
d) collision diagram
Ans: c
62. When the speed of traffic flow becomes zero,then
a) traffic density attains maximum value whereas traffic volume becomes zero
b) traffic density and traffic volume both attain maximum value
c) traffic density and traffic volume both become zero
d) traffic density becomes zero whereas traffic volume attains maximum value
Ans: a
63. On a right angled road intersection with two way traffic, the total number of conflict points is
a) 6
b) 11
c) 18
d) 24
Ans: d
64. The background colour of the informatory sign board is
a) red
b) yellow
c) green
d) white
Ans: b
65. Which of the following is indicated by a warning sign ?
a) level crossing
b) no parking
c) end of speed limit
d) overtaking prohibited
Ans: a
66. "Dead Slow" is a
a) regulatory sign
b) warning sign
c) informatory sign
d) none of the above
Ans: a
67. The most efficient traffic signal system is
a) simultaneous system
b) alternate system
c) flexible progressive system
d) simple progressive system
Ans: c
68. The provision of traffic signals at intersections
a) reduces right angled and rear end collisions
b) increases right angled and rear end collisions
c) reduces right angled collisions but may increase rear end collisions
d) reduces rear end collisions but may increase right angled collisions
Ans: c
69. Select the incorrect statement.
a) Stop or red time of a signal is the sum of go and clearance intervals for the cross flow.
b) Go or green time of a signal is the sum of stop and clearance intervals for the cross flow.
c) Clearance time is generally 3 to 5 seconds.
d) The cycle length is normally 40 to 60 seconds for two phase signals.
Ans: b
70. Center line markings are used
a) to designate traffic lanes
b) in roadways meant for two way traffic
c) to indicate that overtaking is not permitted
d) to designate proper lateral placement of vehicles before turning to different directions
Ans: b
71. The particular places where pedestrians are to cross the pavement are properly marked by the pavement marking known
as
a) stop lines
b) turn markings
c) crosswalk lines
d) lane lines
Ans: c
73. The entrance and exit curves of a rotary have
a) equal radii and equal widths of pavement
b) equal radii but pavement width is more at entrance than at exit curve
c) equal pavement widths but radius is more at entrance curve than at exit curve
d) different radii and different widths of pavement
Ans: d
74. When two equally important roads cross roughly at right angles, the suitable shape of central island is
a) circular
b) elliptical
c) tangent
d) turbine
Ans: a
75. The maximum number of vehicles beyond which the rotary may not function efficiently is
a) 500 vehicles per hour
b) 500 vehicles per day
c) 5000 vehicles per hour
d) 5000 vehicles per day
Ans: c
76. A traffic rotary is justified where
a) number of intersecting roads is between 4 and 7
b) space is limited and costly
c) when traffic volume is less than 500 vehicles per hour
d) when traffic volume is more than 5000 vehicles per hour
Ans: a
77. When a number of roads are meeting at a point and only one of the roads is important, then the suitable shape of
rotary is
a) circular
b) tangent
c) elliptical
d) turbine
Ans: b
78. Maximum number of vehicles can be parked with
a) parallel parking
b) 30° angle parking
c) 45° angle parking
d) 90° angle parking
Ans: d
79. When the width of kerb parking space and width of street are limited, generally preferred parking system is
a) parallel parking
b) 45° angle parking
c) 65° angle parking
d) 90° angle parking
Ans: a
80. As per IRC recommendations, the average level of illumination on important roads carrying fast traffic is
a) 10 lux
b) 15 lux
c) 20 lux
d) 30 lux
Ans: d
81. The most economical lighting layout which is suitable for narrow roads is
a) single side lighting
b) staggered system
c) central lighting system
d) none of the above
Ans: a
82. The direct interchange ramp involves
a) diverging to the right side and merging from left
b) diverging to the left side and merging from right
c) diverging to the right side and merging from right
d) diverging to the left side and merging from left
Ans: c
83. In soils having same values of plasticity index, if liquid limit is increased, then
a) compressibility and permeability decrease and dry strength increases
b) compressibility, permeability and dry strength decrease
c) compressibility, permeability and dry strength increase
d) compressibility and permeability increase and dry strength decreases
Ans: d
84. Which of the following tests measures the toughness of road aggregates ?
a) crushing strength test
b) abrasion test
c) impact test
d) shape test
Ans: c
85. Los Angeles testing machine is used to conduct
a) abrasion test
b) impact test
c) attrition test
d) crushing strength test
Ans: a
87. In CBR test the value of CBR is calculated at
a) 2.5 mm penetration only
b) 5.0 mm penetration only
c) 7.5 mm penetration only
d) both 2.5~mm and 5.0 mm penetrations
Ans: d
88. If aggregate impact value is 20 to 30 percent, then it is classified as
a) exceptionally strong
b) strong
c) satisfactory for road surfacing
d) unsuitable for road surfacing
Ans: c
89. The maximum allowable Los Angeles abrasion value for high quality surface course is
a) 10%
b) 20 %
c) 30%
d) 45 %
Ans: c
90. Percentage of free carbon in bitumen is
a) more than that in tar
b) less than that in tar
c) equal to that in tar
d) none of the above
Ans: b
91. The ductility value of bitumen for suitability in road construction should not be less than
a) 30 cm
b) 40 cm
c) 50 cm
d) 60 cm
Ans: c
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