CVEN3031 UNSW Civil and Environmental Engineering Practice Paper For question 1, just estimate what suburbs the 7 centroid may represent from Sydney map an

CVEN3031 UNSW Civil and Environmental Engineering Practice Paper For question 1, just estimate what suburbs the 7 centroid may represent from Sydney map and make assumptions to estimate the percentageFor question 2, need to read the user manual to answer questions in YOUR OWN WORDS, i think u can just search key words in the manual because that is too many pages. School of Civil and Environmental Engineering
Term 2, 2019
CVEN3031 CIVIL AND ENVIRONMENTAL
ENGINEERING PRACTICE
Assignment 1: (50 Marks)
Deadline: 5pm, Friday, the 14th of June (Week 2)
Maximum 3 pages excluding references and appendix.
1) For the network provided in the group project brief (Figure 1):
i) Write down the “appropriate” names of the centroids, based on the suburb(s) they
represent (and from where the traffic can potentially originate, terminate, and pass
through). A couple of examples are provided in Table 1. (5 Marks)
ii) If the total percentage of vehicles (assume cars only) entering and exiting the network
from all the centroids during the morning peak hour, i.e. 8am to 9am is 100 and 100
respectively, what “could” be the percentage of the total demand that is generated and
attracted by each centroid in the network? State your assumptions.
Present your answer in a tabular format (refer to Table 1). The proportions need not be
entirely accurate but should be well supported by your assumptions based on the land use
characteristics1, and personal observations of the study area. (30 Marks)
Table 1 List of Centroids
S.No.
Centroid
Name
1
2
3
4
5
6
7
SUM
1
2
3
4
5
6
7
?
?
?
City and beyond
Kensington, Zetland, Waterloo, and beyond
?
?
Percentage
of Total
Trip
Generation
?
?
?
?
?
?
?
100
Percentage
of Total
Trip
Attraction
?
?
?
?
?
?
?
100
An important aspect of planning for a new development is to predict the amount of generated and attracted
traffic. This is a necessary input for transport planning, traffic infrastructure design and management.
Understanding the land use characteristics such as population density, the presence of local services and
facilities, socio-economic characteristics, availability of residential parking, etc. is very helpful to estimate the
number of trips generated and attracted by a suburb. Refer to Section 5.1 of the RMS modelling guidelines
document for more details.
1
1
Figure 1 Model network for the group project
2) Make use of the Aimsun manuals to answer the following questions. Show your understanding.
Do not merely reproduce from the manuals. (15 Marks)
i) What is the warm-up period, and what purpose does it serve?
ii) What is the difference between the two models “Fixed using the travel time calculated at
the end of the warm-up period” and “C-logit” (specified in Dynamic Scenario -> Micro
SRC Experiment -> Dynamic Traffic Assignment -> Stochastic Route Choice)?
iii) In the C-logit model, what do the parameters Scale, Beta, and Gamma mean?
iv) What is the purpose of the cycle and number of intervals (specified in Dynamic Scenario
-> Micro SRC Experiment -> Dynamic Traffic Assignment -> Costs)?
v) What is a “yellow box” intersection?
vi) What is a red percentage (specified by right-clicking on a Node -> Edit Control Plan)?
PLAGIARISM
Beware! An assignment that includes plagiarised material will receive a 0% Fail, and students who plagiarise may fail the
course. Students who plagiarise are also liable to disciplinary action, including exclusion from enrolment.
Plagiarism is the use of another person’s work or ideas as if they were your own. When it is necessary or desirable to use
other people’s material you should adequately acknowledge whose words or ideas they are and where you found them
(giving the complete reference details, including page number(s)). The Learning Centre provides further information on
what constitutes Plagiarism at: https://student.unsw.edu.au/plagiarism
2
Aimsun 8 Dynamic Simulators Users’ Manual
July 2014
© 1997-2014 TSS-Transport Simulation Systems
About this Manual
The present manual describes the use of the Microscopic, Mesoscopic
and Hybrid simulators in Aimsun 8. The microscopic simulator is
available in the following Aimsun editions: Aimsun Small, Aimsun
Standard, Aimsun Professional for Micro, Aimsun Advanced and Aimsun
Expert. The mesoscopic simulator requires a license of Aimsun
Professional for Meso, Aimsun Advanced or Aimsun Expert. The hybrid
simulator requires a licence of Aimsun Advanced or Aimsun Expert to be
used.
It also describes the use of the embedded pedestrian simulator Legion
in a microscopic simulation. The Legion for Aimsun module requires a
Legion for Aimsun licence that is included in all Aimsun editions. Note
that, Legion is only available for the Windows versions (both 32bit and
64bit).
Our aim is to keep you informed of any changes so that you can
continue to get the best from Aimsun. As always, please be aware that
product data is subject to change without notice.
Features labelled ‘Fast Track’ have been added after the Aimsun 8 Final
Release and they are only available to users in possession of a valid
SUS.
TSS-Transport Simulation Systems has made every effort to ensure that
all the information contained within this manual is as accurate as
possible. It should be stressed however, that this is a draft version of
the latest Aimsun Dynamic Simulators User’s Manual and as such, some
of the contents may be subject to change.
As always, we welcome your feedback (support@aimsun.com) in our
continued improvement and addition of new features to Aimsun.
1.1 Copyright
Copyright ? 1997-2014 TSS-Transport Simulation Systems, S.L.
All rights reserved. TSS-Transport Simulation Systems products
contain certain trade secrets and confidential and proprietary
information of TSS-Transport Simulation Systems. Use of this
copyright notice is precautionary and does not imply publication or
disclosure.
1.2 Trademark
Aimsun is trademark of TSS-Transport Simulation Systems. S.L.
Other brand or product names are trademarks or registered
trademarks of their respective holders.
Draft
2
1.1
1.2
1
COPYRIGHT ………………………………………………………………………………. 2
TRADEMARK ……………………………………………………………………………… 2
INTRODUCTION ……………………………………………………………………………. 17
1.1
MICROSIMULATOR, MESOSIMULATOR, HYBRID SIMULATOR AND AIMSUN ………………………… 18
1.2
INPUT DATA REQUIREMENTS ……………………………………………………………… 19
1.2.1 Network Layout ………………………………………………………………….. 19
1.2.2 Traffic Demand Data …………………………………………………………….. 20
1.2.3 Traffic Control …………………………………………………………………… 20
1.2.4 Public Transport …………………………………………………………………. 21
1.2.5 Initial State ………………………………………………………………………. 21
1.3
NOTE ON UNITS ………………………………………………………………………… 23
2
TRAFFIC MODELLING ……………………………………………………………………… 25
2.1
TRAFFIC DEMAND DATA………………………………………………………………….. 25
2.1.1 Vehicle Classification ……………………………………………………………. 25
2.1.2 Input Flows and Turning Proportions ……………………………………………. 26
2.1.3 O/D matrices …………………………………………………………………….. 27
2.1.4 Traffic Arrivals …………………………………………………………………… 27
2.2
TRAFFIC GENERATION …………………………………………………………………… 31
2.2.1 Exponential ………………………………………………………………………. 31
2.2.2 Uniform …………………………………………………………………………… 31
2.2.3 Normal ……………………………………………………………………………. 32
2.2.4 Constant ………………………………………………………………………….. 33
2.2.5 “ASAP” ……………………………………………………………………………. 33
2.2.6 External …………………………………………………………………………… 34
2.2.7 Summary of Generation …………………………………………………………. 34
2.2.8 Dealing with a fractional number of trips ……………………………………… 34
2.3
VEHICLE ENTRANCE PROCESS …………………………………………………………….. 37
2.4
VEHICLE MODELLING PARAMETERS ………………………………………………………… 37
2.4.1 Vehicle Attributes ……………………………………………………………….. 38
2.4.2 Local Parameters ………………………………………………………………… 51
2.5
VALID TARGET LANES MODEL: DYNAMIC LOOK-AHEAD ……………………………………….. 59
3
TRAFFIC CONTROL MODELLING …………………………………………………………. 65
3.1
TRAFFIC SIGNAL CONTROL……………………………………………………………….. 65
3.1.1 Signal Groups and Phases ………………………………………………………… 65
4
RAMP METERS …………………………………………………………………………….. 68
4.1.1
4.1.2
4.1.3
4.1.4
4.1.5
5
Green Time Metering ……………………………………………………………. 69
Green Time by Lane Metering …………………………………………………… 69
Flow Metering ……………………………………………………………………. 71
Delay Metering …………………………………………………………………… 73
Flow-ALINEA Metering …………………………………………………………… 74
ACTUATED CONTROL …………………………………………………………………….. 76
5.1
ACTUATED PARAMETERS …………………………………………………………………. 77
5.2
DETECTORS PARAMETERS ………………………………………………………………… 79
5.3
COORDINATED PARAMETERS ……………………………………………………………… 80
5.4
MULTI-RING CONTROLLER ……………………………………………………………….. 80
5.5
ACTUATED CONTROL DEFINITION ………………………………………………………….. 81
5.5.1 General parameters ……………………………………………………………… 81
5.5.2 Rings and barriers editing ……………………………………………………….. 82
5.5.3 Phases definition …………………………………………………………………. 82
5.5.4 Graphical Phase Diagram ………………………………………………………… 88
6
PRE-EMPTION ……………………………………………………………………………… 90
Draft
3
6.1
7
GIVE WAY AND STOP SIGNS………………………………………………………………. 93
7.1
7.2
8
PRE-EMPTION PARAMETERS ………………………………………………………………. 90
GIVE WAY PRIORITY DEFINITION ………………………………………………………….. 94
STOP LINES FOR TURNINGS WITH A YIELD SIGN ……………………………………………… 94
LEGION FOR AIMSUN ……………………………………………………………………… 95
8.1
INTRODUCTION …………………………………………………………………………. 95
8.2
PEDESTRIAN TYPES………………………………………………………………………. 95
8.2.1 Create new pedestrian types ……………………………………………………. 95
8.2.2 Change pedestrian type settings ………………………………………………… 96
8.2.3 Choose how pedestrians are visualised …………………………………………. 98
8.3
PEDESTRIAN CROSSINGS ………………………………………………………………….. 99
8.3.1 Create a new pedestrian crossing for a node …………………………………… 99
8.3.2 Change the length of a pedestrian crossing ……………………………………. 99
8.3.3 Control pedestrian movement at crossings …………………………………….. 99
8.3.4 Signal groups …………………………………………………………………….. 100
8.4
PEDESTRIAN NAVIGATION AREAS …………………………………………………………. 100
8.4.1 Define where pedestrians can go ………………………………………………. 100
8.4.2 Define where pedestrians cannot go …………………………………………… 101
8.5
PEDESTRIAN CENTROIDS…………………………………………………………………. 109
8.5.1 Create a pedestrian centroid configuration …………………………………… 110
8.5.2 Pedestrian entrance centroids …………………………………………………. 110
8.5.3 Pedestrian exit centroids ……………………………………………………….. 111
8.6
ROUTES AND DEMAND …………………………………………………………………… 112
8.6.1 Pedestrian O/D routes ………………………………………………………….. 112
8.6.2 Define pedestrian trips with a pedestrian O/D matrix ……………………….. 119
8.7
PUBLIC TRANSPORT…………………………………………………………………….. 121
8.7.1 Public Transport Stops ………………………………………………………….. 121
8.7.2 Timetable editing ……………………………………………………………….. 123
8.7.3 Vehicle Attributes ………………………………………………………………. 124
8.7.4 O/D matrix editing ……………………………………………………………… 126
8.7.5 O/D route editing ……………………………………………………………….. 126
8.8
SIMULATION …………………………………………………………………………… 126
8.8.1 Legion extension activation …………………………………………………….. 127
8.8.1 Automatic build option …………………………………………………………. 130
8.8.2 ORA file ………………………………………………………………………….. 131
8.9
LEGION OUTPUTS………………………………………………………………………. 133
8.9.1 Replication outputs ……………………………………………………………… 134
8.9.2 Section outputs ………………………………………………………………….. 134
8.9.3 O/D Pair outputs ………………………………………………………………… 135
8.9.4 Service Point outputs …………………………………………………………… 136
8.9.5 Public Transport Stop outputs ………………………………………………….. 136
8.9.6 Database outputs ……………………………………………………………….. 136
8.10
LEGION LICENCE ……………………………………………………………………….. 139
9
RUNNING THE SIMULATION …………………………………………………………….. 141
9.1
AIMSUN SCENARIO ……………………………………………………………………… 141
9.1.1 Main Folder ……………………………………………………………………… 142
9.1.2 Output Folder …………………………………………………………………… 143
9.1.3 Aimsun API Folder ………………………………………………………………. 156
9.1.4 Variables Folder …………………………………………………………………. 157
9.1.5 Strategies & Conditions Folder …………………………………………………. 157
9.1.6 Parameters Folder ………………………………………………………………. 158
9.1.7 Scenario’s Context Menu ………………………………………………………… 158
9.2
AIMSUN DYNAMIC EXPERIMENT …………………………………………………………… 158
9.2.1 Main Folder ……………………………………………………………………… 159
9.2.2 Behaviour and Reaction Times folder ………………………………………….. 162
9.2.3 Arrivals Folder …………………………………………………………………… 162
9.2.4 Dynamic Traffic Assignment Folder ……………………………………………. 164
Draft
4
9.2.5 Variables Folder …………………………………………………………………. 166
9.2.6 Policies Folder …………………………………………………………………… 167
9.2.7 Dynamic Experiment’s Context Menu …………………………………………… 167
9.3
AIMSUN REPLICATION …………………………………………………………………… 168
9.3.1 Replication Editor ………………………………………………………………. 169
9.3.2 Replication Context Menu ………………………………………………………. 171
9.4
AIMSUN AVERAGE ………………………………………………………………………. 173
9.4.1 Average Context Menu ………………………………………………………….. 175
9.5
AIMSUN RESULT ……………………………………………………………………….. 176
9.6
SIMULATING AN ANIMATED REPLICATION ………………………………………………….. 176
9.7
RECORDING A REPLICATION ……………………………………………………………… 178
9.8
SIMULATING A BATCH REPLICATION ………………………………………………………. 179
9.9
SIMULATING A RESULT ………………………………………………………………….. 179
9.10
VARIABLES …………………………………………………………………………….. 180
10
TRAFFIC MANAGEMENT ………………………………………………………………… 182
10.1.1
10.1.2
10.1.3
10.1.4
10.1.5
10.1.6
10.1.7
10.1.8
11
Strategies………………………………………………………………………… 182
Policies …………………………………………………………………………… 183
Triggers ………………………………………………………………………….. 185
Actions …………………………………………………………………………… 186
Authorities ………………………………………………………………………. 197
Problems …………………………………………………………………………. 197
VMS ………………………………………………………………………………. 197
Traffic Conditions……………………………………………………………….. 198
SIMULATION OUTPUTS …………………………………………………………………. 201
11.1
ANIMATED OUTPUTS ……………………………………………………………………. 201
11.1.1 Animation of the simulation ……………………………………………………. 201
11.1.2 Simulation Attributes in Objects ………………………………………………. 202
11.1.3 Default View Styles and Modes in the simulation …………………………….. 204
11.1.4 Displaying Vehicle Attributes …………………………………………………… 205
11.1.5 Displaying Simulated Traffic Control ………………………………………….. 209
11.1.6 Space Time Diagram ……………
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