Online Quiz 3_ CVE30003 TRANSPORT ENGINEERING
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School
Swinburne University of Technology *
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Course
30003
Subject
English
Date
Jun 7, 2024
Type
Pages
9
Uploaded by BrigadierLlama4338
Take Online Quiz 3
Due 26 Apr at 23:59
Points 26
Questions 27
Available until 5 May at 23:59
Time limit 60 Minutes
This quiz was locked 5 May at 23:59.
Attempt history
Attempt
Time
Score
LATEST
Attempt 1
25 minutes
21.33 out of 26
Correct answers are no longer available.
Score for this quiz: 21.33 out of 26
Submitted 26 Apr at 14:08
This attempt took 25 minutes.
Question 1
1 / 1 pts
True
False
Question 2
1 / 1 pts
True
False
Question 3
1 / 1 pts
True
False
To achieve safety at rural intersections, roundabouts are designed to deflect vehicle paths to slow
down vehicles.
The size of the central island must be sufficiently large to separate the adjacent entry and exit points.
The exit radii is designed similarly to the approach radii.
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The exit radii use a large radii curve (greater than the circulating radius, approx. 100m) or straight
tangential to central island
Question 4
1 / 1 pts
True
False
Question 5
1 / 1 pts
True
False
Question 6
1 / 1 pts
space is constraint
multi-leg intersections
roads with high right turn volumes
high speed rural intersections
IncorrectQuestion 7
0 / 1 pts
Guide vehicles on entry
Slow vehicles down
Improve sight distance
Design smoother entry radius
PartialQuestion 8
0.33 / 1 pts
Under the Australian Road Rules, vehicle drivers have to give way to pedestrians at a roundabout
In designing a small roundabout, consideration must be given to over-dimensional vehicles that may
possibly use the intersection. A roundabout is suitable to be placed at Deflection of vehicle path is the most important design objective of roundabout geometric design.
This is done to achieve one or more of the following:
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A driver at the “Give Way” line should have a clear line of sight to approaching traffic entering the roundabout from
an approach immediately to the right.
the driver has a good view of the splitter-island, the central island and the circulating carriageway
drivers approaching the roundabout are able to see other entering vehicles well before they reach the “Give Way”
line.
drivers be able to see the traffic from opposite leg.
Question 9
1 / 1 pts
for multi-lane roundabout, the width per circulating lane is wider than the width of circulating lane for single lane
roundabout
the bigger the central island is, the wider the circulating lane is.
The number of circulating lanes can be different for different legs.
all lanes for special vehicles will end at the entry lanes and will not be designed for in the circulating lanes.
Question 10
1 / 1 pts
offset approach
treatment by central island
shape and position of splitter island
provision of blister at the central island
A roundabout should provide sufficient sight distance with the following criteria:
Which of the following is TRUE about circulating lanes?
Various methods of deflecting vehicle paths include:
Instruction: Solve the whole problem first,
then input the answers in the next few questions.
(question sequence may be random). You will be asked to input your answers separately.
For an two-lane two-way unsignalised intersection below, it was suggested to be converted into a
single-lane roundabout.
Given:
Inscribed diameter = 40m
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Question 11
1 / 1 pts
926
Entry lane width = 4m
Analyse the North Leg
to
a) determine the entry, circulating and exit flows.
b) determine capacity.
c) determine the degree of saturation.
Determine the capacity
for North Leg
.
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Question 12
1 / 1 pts
0.45
Question 13
1 / 1 pts
0.43
Determine the proportion of bunched vehicles
for North Leg
.
Determine the degree of saturation
for North Leg
.
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Question 14
1 / 1 pts
305
75 + 150 + 80 = 305vph
Question 15
1 / 1 pts
400
60 + 300 + 40 = 400vph
Question 16
1 / 1 pts
Proportion of bunched vehicles
What is the exit flow
in vph for North Leg
?
What is the entry flow
for North Leg
?
Roundabout capacity is dependent on one or more of the following geometric parameters
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Number of circulating lanes
Lane widths of entering lanes
Inscribed diameter
Question 17
1 / 1 pts
Central island diameter + two circulating road widths
Central island diameter + deflection path
Central island diameter
Central island diameter + one circulating road width
Question 18
1 / 1 pts
True
False
Question 19
1 / 1 pts
The movement with the longest green time
The movement with the highest flow
The movement with the highest degree of saturation
The movement with the least lost time
Question 20
1 / 1 pts
A set of movements have a red light
A set of movements have a green light
A set of movement is not allowed to move
A set of movements have a yellow light
The inscribed diameter of a roundabout is
Signalised intersections are safer for cyclists than roundabouts.
The degree of saturation of a signalised intersection is determined by
A phase is a period of time when
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Question 21
1 / 1 pts
The maximum flow rate during green
The same as the capacity for that lane or movement
The movement of through vehicles across a signalised intersection
The maximum flow rate during the cycle time
Question 22
1 / 1 pts
1
IncorrectQuestion 23
0 / 1 pts
3.06
Question 24
1 / 1 pts
Saturation flow of a lane or movement at a signalised intersection is
Instruction: Solve the whole problem first,
then input the answers in the next few questions.
(question sequence may be random). You will be asked to input your answers separately.
Determine the saturation flow for a normal unopposed right turn at signalised intersection.
Environment class: Nearly ideal conditions
Lane width: 3.5m
Gradient: Flat
Volume = 300 cars, 20 HV
Determine the width factor.
Determine the traffic composition factor.
Determine the gradient factor.
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1
IncorrectQuestion 25
0 / 1 pts
705.31
Quiz score: 21.33 out of 26
Determine the base saturation flow, S
.
b
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