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Toronto SimCap Toronto, ON, Canada, July 2014 SIDRA INTERSECTION 6 sidrasolutions.com | sidrasolutions.com/forums | youtube.com/sidrasolutions
Toronto SimCapToronto, ON, Canada, July 2014
SIDRA INTERSECTION 6
sidrasolutions.com | sidrasolutions.com/forums | youtube.com/sidrasolutions
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Our company
Multi-Award Winning Company
• 2010 Victorian Small Business “Innovation” Award
• 2009 Governor of Victoria Export Award
• 2008 Contribution to the Transportation Profession Award of the ITE Australia & New Zealand Section to Dr R. Akçelik
Quality Management SystemCertificate # QEC27492
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SIDRA the word …
Signalised (and unsignalised)
Intersection
Design and
Research
Aid
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SIDRA SOLUTIONS WEBSITE
Support
Download ARTICLES
Training
Over 220 training workshops with about 4000 delegates attending since July 2000.
YouTube Channel for our latest TUTORIAL and SUPPORT videos on all our software. Subscribe and stay posted.
youtube.com/sidrasolutions
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SIDRA INTERSECTION Background
About 9000 licences in 1650 organisations in 82 Countries
SIDRA INTERSECTION 6 (including NETWORK Model)
First released in 1984
Continuous development in response to user feedback
• Biggest changes in the 30-year history of the software
• Major data structure and user interface changes
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563
377
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USA
Australia
South Africa
Canada
Arabian Peninsula
Malaysia
New Zealand
Slovenia
Singapore
Spain
Norway
Italy
United Kingdom
Chile
Other Europe
Other Asia and Africa
Other Latin America
SIDRA INTERSECTION Users
8800 Licences (1650 Organisations)
82 Countries
Latest Version 6.0, 5.1, 5.0, 4.0, 3.x Users Only (23 May 2014)
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What makes SIDRA INTERSECTION different?
STRONG RESEARCH BASE:Empirical and theoretical methods combined ...
20 years at Australian Road Research Board14 years at Akcelik & Associates
Metering Signals Research for VIC ROADS
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What makes SIDRA INTERSECTION different?
• Roundabouts• Signals • Sign Control• Pedestrian Crossings
Micro-analytical method for evaluating alternative treatments for INTERSECTIONS AND NETWORKSin one package:
Not just a roundabout software package !
MODEL CONSISTENCY
in evaluating alternative
intersection treatments
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Important for NETWORK Modeling
MODEL CONSISTENCY for different intersection types (definition of delay, back of queue, stops, etc).
What makes SIDRA INTERSECTION different?
Unique gap-acceptance method by signal analogy helps to model back of queue and stops for roundabouts and two-way sign control.
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What makes SIDRA INTERSECTION different?
Slip / Bypass Lane for BUSES ONLY
Individual approach, exit and circulatinglanes have different characteristics
Approach Short Lane
Exit Short Lane
LANE-BASED MODELMore realistic and reliable analysis compared with approach - based and lane group (link) - based methods from UK and USA:
• General: Unequal lane flows, De facto exclusive lanes, Short lanes (approach and exit), Slip / Bypass lanes (Give-way / Yield, Continuous, Signals)
• Roundabouts (Circulating lane use; Dominant and subdominant lanes)
• NETWORK Model (lane queues, lane blockage, signal platoon arrival and departure patterns)
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What makes SIDRA INTERSECTION different?
VEHICLE PATH model for
stop-start traffic
• Emissions - CO2, CO, HC, NOx
• Fuel Consumption
• Operating COST
Also used for Geometric Delay calculations
Distance
Speed
Time
Time
Four Basic Path Elements
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Acceleration – Deceleration models
Polynomial acceleration profile model
Light Vehicles Heavy Vehicles
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New in SIDRA INTERSECTION 6
Fuel and emission model parameters updated for modern vehicles
Model parameters are available for user input (model calibration )
y = 0.9903x + 0.0076R² = 0.9774
0.0
0.5
1.0
1.5
2.0
2.5
3.0
0.0 0.5 1.0 1.5 2.0 2.5 3.0
Estim
ate
d fu
el c
onsu
mptio
n (m
L/s
)
Measured fuel consumption rate (mL/s)
Toyota Corolla Ascent 2004
Estimated vsmeasured instantaneous fuel consumption rates
0.0
0.5
1.0
1.5
2.0
2.5
3.0
0 100 200 300 400 500 600 700 800 900 1000
Fu
elC
on
su
mp
tio
n (m
L/s
)
Elapsed time (s)
Toyota Corolla Ascent 2004
Measured Fuel Consumption
Estimated Fuel Consumption
“Fuel Consumption and Emission Models Calibrated for Modern Vehicles” (IPENZ 2012)
www.sidrasolutions.com/Resources/Articles
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Individual vehicles
Microsimulation models
Drive cycles (Vehicle paths)
SIDRA
INTERSECTION 6
Traffic flows
TRL (UK) Roundabout Model
HCM (US) (Signals, Signs) TRANSYT
HCM (US) (Roundabouts)
Speed-flow functions
Strategic transport planning models
APPROACHESLane Groups / LINKS
Individual LANES
Lane SEGMENTS
Level of Analysis Detail
Micro-analytical model
more detailed model of TRAFFIC STREAM
more detailed model of ROAD GEOMETRY
HCM: Highway
Capacity
Manual (2010)
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What makes SIDRA INTERSECTION different?
Includes two Roundabout Capacity Models
• SIDRA Standard (calibrated for US driving conditions)
• HCM 2010
Common fundamental features:
• Geometry and Driver Behavior (Gap Acceptance) effects combined
• Lane-based method• Empirical and theoretical methods
combined• Non-linear form
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What makes SIDRA INTERSECTION different?
• Numerous extensions
• More extensive GEOMETRY parameters than HCM 2010
• Follow-up Headway and Critical Gap values decrease with increased circulating flows
SIDRA Standard Model Advantages
0.0
0.5
1.0
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2.0
2.5
3.0
3.5
4.0
0 300 600 900 1200 1500 1800 2100 2400 2700
Do
min
an
t la
ne f
oll
ow
-up
head
way (
s)
Circulating flow (pcu/h)
Di = 30, ne = 1
Di = 50, ne = 2
Di = 80, ne = 3
More capacity
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
0 300 600 900 1200 1500 1800 2100 2400 2700
Do
min
an
t la
ne c
riti
cal g
ap
(s)
Circulating flow (pcu/h)
Di = 30, ne = 1
Di = 50, ne = 2
Di = 80, ne = 3More capacity
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What makes SIDRA INTERSECTION different?
Roundabout Geometry
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What makes SIDRA INTERSECTION different?
Now a powerful lane-based
micro-analytical NETWORK MODEL• all intersection types
(signals, roundabouts, sign control)
• easy to configure using SIDRA Sites
diverse Movement ClassesLight VehiclesHeavy VehiclesBusesBicyclesLarge TrucksTrams / Light Rail two User Classes
Combined with the lane-based method, new Movement Classes allow modeling of Bus Priority Lanes, Bicycle Lanes, and so on …
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What makes SIDRA INTERSECTION different?
The two basic elements of the model are highly interactive with opposing effects.
SIDRA INTERSECTION 6 uses a network-wide iterative process to find a solution that balances these opposing effects.
Backward spread of congestion and capacity constraint are common to all intersection types.
Backward spread of congestion (reduced upstream capacity)
Capacity constraint (reduced downstream arrival flows)
Unique Method for Complex Network Design and Congestion Modeling
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SIDRA INTERSECTION Version 6
SIDRA NETWORK model:
Backward spread of congestion: capacity reduction at upstream lanes blocked by downstream lane queues.
Capacity constraint: oversaturated upstream lanes reduce demand volumes for downstream movements
Lane Movements: blockage of upstream lanes depends on lane choices of movements from approach lanes to exit lanes
Upstream and downstream lane flows and mid-block lane changes on an approach to determine platooning.
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Network Example: Freeway Interchange Comparison
Diverging Diamond Interchange
Signalized Diamond Interchange
Roundabout Interchange
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Example: Staggered T Roundabouts
Two T-shaped roundabouts placed with 50 m distance between them to demonstrate the lane-based network model.
Canadian ITE 2013 Annual Meeting
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Signal Timings: Variable Phase Sequence Analysis
Diamond Overlap Variable Phase Sequence
* Variable phase
A C
B1*
B2*
D F
E1*
E2*
Sequences generated:A - B1 - C - D - E1 - FA - B1 - C - D - E2 - FA - B1 - C - D - FA - B2 - C - D - E1 - FA - B2 - C - D - E2 – FA - B2 - C - D - FA - C - D - E1 - FA - C - D - E2 - FA - C - D - F
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Pedestrians at signals
Slip lane crossing and diagonal crossing (all-pedestrian phase) features and more flexible pedestrian staged crossing arrangements
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Flexible Geometry
Two-Segment Lanes (with lane segments that can be allocated to different Movement Classes)
Contra-flow lanes
Strip islands (between lanes)
High-angle and low-angle slip (bypass) lanes
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SIDRA INTERSECTION 6 New Features - Summary
Bus Priority Lane and Phase Example
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Two-Way Sign Control (Give Way and Stop)
Method to adjust critical gap and follow-up headway automatically for intersection geometry and control, with option to apply reduction with opposing flow rate
Pedestrians
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DEMAND AND SENSITIVITY Analysis
Design Life, Flow Scale and Sensitivity Analysis options with reports and Graphs for
intersection
lane
approach
movement (including separate results for individual movement classes)
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User Models
Two User Models for calibrating the complete default system for local conditions
Edit
Reset Defaults
Export
Import
This facility will be supported in future versions
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Major New Features Introduced in SIDRA INTERSECTION 6 Recently
User Models Model Calibration Needs
Input Comparison
Output Comparison (Site & Network)
Variable Run
Network Configuration Enhancements
Network Displays
Network Flows
Network Clone and Import
API and Utilities:
• Excel Applications VOLUMES and ANNUAL SUMS• Linking with other software packages
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SIDRA Success Stories – Example 1
Using SIDRA, Vic Roads engineers redesigned a highly congested two-lane roundabout in Melbourne as a three-lane roundabout eliminating persistent congestion.
Fitzsimons Lane - Porter St Roundabout, Melbourne, Australia
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SIDRA Success Stories – Example 2
Ferntree Gully Rd - Scoresby Rd (Melbourne)Actuated Signalised Intersection
The SIDRA estimates of performance measures for actuated signals were found to be highly accurate based on the results of real-life surveys at an intersection in Melbourne.
y = 1.1033x - 0.3682
R2 = 0.9761
0
4
8
12
16
20
0 4 8 12 16 20
Average back of queue (veh) (Manual survey)
Avera
ge b
ack o
f q
ueu
e (
veh
)
(SID
RA
esti
mate
)
y = 1.0693x - 1.7702
R2 = 0.9693
5
10
15
20
25
30
35
5 10 15 20 25 30 35
Queue clearance time (s) (Manual survey)
Qu
eu
e c
leara
nce tim
e (s)
(SID
RA
esti
mate
)
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SIDRA Model Success Stories – Example 3
SIGNALISED INTERSECTIONS
US North Carolina State University carried out a comprehensive study and evaluation of alternative software packages for signalised intersections (SIDRA, TRANSYT, HCS/HCM, Signal 94, HCM/Cinema, EVIPAS) for the North Carolina DOT. The report stated:
“SIDRA’s powerful combination of high model usability, superior matching of field delays at the lane group level, versatile optimization features, and graphical user interface makes it the model of choice.”.
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SIDRA Model Success Stories – Example 4
Richmond Rd and Garfield Rd Intersection, Marsden Park, NSW, Australia
ARRB study for AUSTROADS (Project NS 1371 -Modelling and Analysis of Network Operations) compared micro-analytical (SIDRA INTERSECTION) and microsimulation (VISSIM) modelling of this intersection including comparison against field measurements.
The study found that
“Cycle average queue estimates were within one vehicle of field measurement”.
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SIDRA TRIP
Vehicle Trip Assessment Software for GPS Data
• travel level of service
• performance (delay, speed, travel time)
• operating cost and user cost (including toll cost)
• fuel consumption
• emissions
• noise
and Quick Scenario Analysis
Version 1.1 released with new Licensing!
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SIDRA TRIP
Data collected by an instrumented vehicle,
e.g. using a GPS data logger
User-specified drive-cycle data
SIDRA TRIP Data: Two methods
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SIDRA TRIP
Using SIDRA TRIP, you can assess:
• Travel conditions
• Traffic performance
• User Cost / Operating cost
• Fuel consumption
• Emissions
• Noise
END OF PRESENTATION
Thank you!
www.sidrasolutions.com
