TRAFFIC MICROSIMULATION & 3-D VISUALIZATION Presenters: Fadi Emil Nassar, P.E. Veronica A. Boza,...
-
Upload
shawn-mckenzie -
Category
Documents
-
view
223 -
download
0
Transcript of TRAFFIC MICROSIMULATION & 3-D VISUALIZATION Presenters: Fadi Emil Nassar, P.E. Veronica A. Boza,...
![Page 1: TRAFFIC MICROSIMULATION & 3-D VISUALIZATION Presenters: Fadi Emil Nassar, P.E. Veronica A. Boza, E.I. FDOT – MAY 4, 2007.](https://reader036.fdocuments.net/reader036/viewer/2022062304/56649ea85503460f94bac46e/html5/thumbnails/1.jpg)
TRAFFIC MICROSIMULATION & 3-D VISUALIZATION
Presenters: Fadi Emil Nassar, P.E.Veronica A. Boza, E.I.
FDOT – MAY 4, 2007
![Page 2: TRAFFIC MICROSIMULATION & 3-D VISUALIZATION Presenters: Fadi Emil Nassar, P.E. Veronica A. Boza, E.I. FDOT – MAY 4, 2007.](https://reader036.fdocuments.net/reader036/viewer/2022062304/56649ea85503460f94bac46e/html5/thumbnails/2.jpg)
MACRO / MICRO TRAFFIC MODELS
MACRO MODEL: TRAFFIC FORECASTMICRO MODEL: OPERATIONAL ANALYSIS NO LONGER SEPARATE FILEDS:
– DISTRIBUTION IMPACTED BY OPERATIONS– CAPACITY CONSTRAINT AT INTERSECTIONS– TRANSIT/MODAL SPLIT IMPACTED BY CONGESTION
GAP CLOSING BTW MACRO & MICRO ANALYSESCONVERGENCE OF SOFTWARE INTEGRATED MODELS:
– CUBE / DYNAMISM– VISUM / VISSIM
![Page 3: TRAFFIC MICROSIMULATION & 3-D VISUALIZATION Presenters: Fadi Emil Nassar, P.E. Veronica A. Boza, E.I. FDOT – MAY 4, 2007.](https://reader036.fdocuments.net/reader036/viewer/2022062304/56649ea85503460f94bac46e/html5/thumbnails/3.jpg)
TRAFFIC MICROSIMULATION MODELS
ANALYZE THE PERFORMANCE OF TRANSPORTATION SYSTEMS BY SIMULATING THE MOVEMENTS OF INDIVIDUAL VEHICLES ON A SPLIT-SECOND BASIS
ACCOUNT FOR ROADWAY, DRIVER AND VEHICLE CHARACTERISTICS
OPERATIONAL RESULTS (SPEED, QUEUES, DELAYS, ETC) ARE BASED ON TRAFFIC INTERACTION INSTEAD OF EQUATIONS
![Page 4: TRAFFIC MICROSIMULATION & 3-D VISUALIZATION Presenters: Fadi Emil Nassar, P.E. Veronica A. Boza, E.I. FDOT – MAY 4, 2007.](https://reader036.fdocuments.net/reader036/viewer/2022062304/56649ea85503460f94bac46e/html5/thumbnails/4.jpg)
3D-VISUALIZATION
COMPLEX ROADWAY SYSTEMSBRIDGESOVERPASSES INTERCHANGESAIRPORT TERMINAL RAMPSVIEW FROM CAR
![Page 5: TRAFFIC MICROSIMULATION & 3-D VISUALIZATION Presenters: Fadi Emil Nassar, P.E. Veronica A. Boza, E.I. FDOT – MAY 4, 2007.](https://reader036.fdocuments.net/reader036/viewer/2022062304/56649ea85503460f94bac46e/html5/thumbnails/5.jpg)
SR 112 - MIAMI
![Page 6: TRAFFIC MICROSIMULATION & 3-D VISUALIZATION Presenters: Fadi Emil Nassar, P.E. Veronica A. Boza, E.I. FDOT – MAY 4, 2007.](https://reader036.fdocuments.net/reader036/viewer/2022062304/56649ea85503460f94bac46e/html5/thumbnails/6.jpg)
![Page 7: TRAFFIC MICROSIMULATION & 3-D VISUALIZATION Presenters: Fadi Emil Nassar, P.E. Veronica A. Boza, E.I. FDOT – MAY 4, 2007.](https://reader036.fdocuments.net/reader036/viewer/2022062304/56649ea85503460f94bac46e/html5/thumbnails/7.jpg)
WHEN TO USE MICROSIMULATION
LIMITATION OF HCM / HCSSYSTEM ANALYSIS (COORDINATION)CONGESTION / SPILLBACK / BOTTLENECKQUEUING / STORAGECLOSELY SPACED RAMPSBUS / MULTIMODAL / ITS / RAMP METERINGSIGNAL PRE-EMPTIONCOMPLEX OR UNIQUE GEOMETRY
![Page 8: TRAFFIC MICROSIMULATION & 3-D VISUALIZATION Presenters: Fadi Emil Nassar, P.E. Veronica A. Boza, E.I. FDOT – MAY 4, 2007.](https://reader036.fdocuments.net/reader036/viewer/2022062304/56649ea85503460f94bac46e/html5/thumbnails/8.jpg)
SIMULATION PROCESS
STUDY OBJECTIVESMODEL SELECTIONDATA COLLECTIONBASE MODEL DEVELOPMENT CALIBRATION / VALIDATIONALTERNATIVE ANALYSISMOE SUMMARY / PREFERRED ALTERNATIVEPRESENTATION OF RESULTS
![Page 9: TRAFFIC MICROSIMULATION & 3-D VISUALIZATION Presenters: Fadi Emil Nassar, P.E. Veronica A. Boza, E.I. FDOT – MAY 4, 2007.](https://reader036.fdocuments.net/reader036/viewer/2022062304/56649ea85503460f94bac46e/html5/thumbnails/9.jpg)
STUDY OBJECTIVES
GOALS OF MODELING PROCESSESTABLISH NEED FOR MICROSIMULATIONPROJECT SCOPING
– LIMITS OF ANALYSIS / INFLUENCE AREA– BOUNDARY CONDITIONS – TIME PERIOD– PEAK HOUR FACTOR
LEVEL OF DETAIL / EFFORT / BUDGETUNDERSTAND MODEL STRUCTURE
– DELAY, QUEUE, DRIVER BEHAVIOR
MOE DIFFERENT FROM HCM EQUATIONS
![Page 10: TRAFFIC MICROSIMULATION & 3-D VISUALIZATION Presenters: Fadi Emil Nassar, P.E. Veronica A. Boza, E.I. FDOT – MAY 4, 2007.](https://reader036.fdocuments.net/reader036/viewer/2022062304/56649ea85503460f94bac46e/html5/thumbnails/10.jpg)
MODEL SELECTION
BASIC MODELSCORSIMSYNCHRO/SIMTRAFFIC
ADVANCED MODELSVISSIM / AISUM / CUBE DYNAMISMPARAMICS & OTHERSCOMBINATION OF MODELS
![Page 11: TRAFFIC MICROSIMULATION & 3-D VISUALIZATION Presenters: Fadi Emil Nassar, P.E. Veronica A. Boza, E.I. FDOT – MAY 4, 2007.](https://reader036.fdocuments.net/reader036/viewer/2022062304/56649ea85503460f94bac46e/html5/thumbnails/11.jpg)
CORSIM
LINK-NODE NETWORK (DEVELOPED BY FHWA)ADVANTAGES:
– WIDELY USED & ACCEPTED– EXTENSIVE VALIDATION IN USA– FREEWAY/RAMP OPERATION– BUS ROUTES – ITS ANALYSIS – RAMP METERING– TIME PERIOD ANALYSIS– LINK AGGREGATION– SHORT/LONG INCIDENT SIMULATION– HEADWAY DISTRIBUTION TYPES
![Page 12: TRAFFIC MICROSIMULATION & 3-D VISUALIZATION Presenters: Fadi Emil Nassar, P.E. Veronica A. Boza, E.I. FDOT – MAY 4, 2007.](https://reader036.fdocuments.net/reader036/viewer/2022062304/56649ea85503460f94bac46e/html5/thumbnails/12.jpg)
CORSIM (CONTINUE)
DISADVANTAGES:– 2-D ONLY (NO ELEVATIONS)– SIMPLIFIED SIGNAL OPERATION– PROBLEMS WITH SHORT LINKS– RESULTS GROUPED PER LINKS– NO SIGNAL OPTIMIZATION– NO INTERSECTION LOS– IMPROVED BUT LIMITED GRAPHICAL INTERFACE
![Page 13: TRAFFIC MICROSIMULATION & 3-D VISUALIZATION Presenters: Fadi Emil Nassar, P.E. Veronica A. Boza, E.I. FDOT – MAY 4, 2007.](https://reader036.fdocuments.net/reader036/viewer/2022062304/56649ea85503460f94bac46e/html5/thumbnails/13.jpg)
CORSIM-CYPRESS
![Page 14: TRAFFIC MICROSIMULATION & 3-D VISUALIZATION Presenters: Fadi Emil Nassar, P.E. Veronica A. Boza, E.I. FDOT – MAY 4, 2007.](https://reader036.fdocuments.net/reader036/viewer/2022062304/56649ea85503460f94bac46e/html5/thumbnails/14.jpg)
Alternative 1
Alternative 2
Partial Cloverleaf Interchange:
•Limited Spacing of Interchange
•Stacks queue in one or more quadrants
•Requires Extensive ROW
•Complex Design
Diamond Interchange•Sufficient Spacing•Simple Design•Narrow ROW•Stopped Condition
CORSIM – INTERCHANGE ALTERNATIVES
![Page 15: TRAFFIC MICROSIMULATION & 3-D VISUALIZATION Presenters: Fadi Emil Nassar, P.E. Veronica A. Boza, E.I. FDOT – MAY 4, 2007.](https://reader036.fdocuments.net/reader036/viewer/2022062304/56649ea85503460f94bac46e/html5/thumbnails/15.jpg)
SYNCHRO/SIMTRAFFIC
LINK-NODE NETWORK (TRAFFICWARE)ADVANTAGES:
– WIDELY USED– EASY DATA ENTRY / BEST GRAPHIC INTERFACE – EXPORT TO CORSIM / T7F / HCS / VISSIM – DATABASE INTERFACE (VOLUME/SIGNAL/LAYOUT)– INTEGRATED SIGNAL OPTIMIZATION– ROUNDABOUT MODELING (NOT YET VALIDATED)– INTERSECTION LOS (HCM / ICU)– DIAMOND INTERCHANGE / RING & BARRIER– QUEUE LENGTH (PERCENTILE)– EASY TO CREATE SUB NETWORKS
![Page 16: TRAFFIC MICROSIMULATION & 3-D VISUALIZATION Presenters: Fadi Emil Nassar, P.E. Veronica A. Boza, E.I. FDOT – MAY 4, 2007.](https://reader036.fdocuments.net/reader036/viewer/2022062304/56649ea85503460f94bac46e/html5/thumbnails/16.jpg)
SYNCHRO/SIMTRAFFIC (CONTINUE)
DISADVANTAGES:– NO TRANSIT MODELING– LIMITED FREEWAY CAPABILITY– SIMTRAFFIC RESULTS DIFFER FROM SYNCHRO & NOT
WIDELY ACCEPTED – LINK-BASED MOEs– LIMITED FLEXIBILITY OUTSIDE BASIC INTERSECTIONS
(TOLL PLAZA, AIRPORT, SIGNAL PREEMPTION, ITS, ETC)
![Page 17: TRAFFIC MICROSIMULATION & 3-D VISUALIZATION Presenters: Fadi Emil Nassar, P.E. Veronica A. Boza, E.I. FDOT – MAY 4, 2007.](https://reader036.fdocuments.net/reader036/viewer/2022062304/56649ea85503460f94bac46e/html5/thumbnails/17.jpg)
![Page 18: TRAFFIC MICROSIMULATION & 3-D VISUALIZATION Presenters: Fadi Emil Nassar, P.E. Veronica A. Boza, E.I. FDOT – MAY 4, 2007.](https://reader036.fdocuments.net/reader036/viewer/2022062304/56649ea85503460f94bac46e/html5/thumbnails/18.jpg)
SYNCHRO - UNIVERSITY OF MIAMI
![Page 19: TRAFFIC MICROSIMULATION & 3-D VISUALIZATION Presenters: Fadi Emil Nassar, P.E. Veronica A. Boza, E.I. FDOT – MAY 4, 2007.](https://reader036.fdocuments.net/reader036/viewer/2022062304/56649ea85503460f94bac46e/html5/thumbnails/19.jpg)
SAMPLE SYNCHRO/SIMTRAFFIC NETWORK
![Page 20: TRAFFIC MICROSIMULATION & 3-D VISUALIZATION Presenters: Fadi Emil Nassar, P.E. Veronica A. Boza, E.I. FDOT – MAY 4, 2007.](https://reader036.fdocuments.net/reader036/viewer/2022062304/56649ea85503460f94bac46e/html5/thumbnails/20.jpg)
Becker Road
I-95
CORSIM Network
PORT ST. LUCIE
![Page 21: TRAFFIC MICROSIMULATION & 3-D VISUALIZATION Presenters: Fadi Emil Nassar, P.E. Veronica A. Boza, E.I. FDOT – MAY 4, 2007.](https://reader036.fdocuments.net/reader036/viewer/2022062304/56649ea85503460f94bac46e/html5/thumbnails/21.jpg)
ADVANCED - VISSIMLINK-CONNECTORDEVELOPED BY PTV IN GERMANYADVANTAGES:
– INCREASING ACCEPTABILITY IN US– EXTENSIVE TRANSIT MODELING CAPABILITY
• LIGHT RAIL• BUS TRANSIT WITH BUS STATIONS• ROUTE ASSIGNMENT BASED ON SCHEDULE
– EXPLICIT PEDESTRIAN & CYCLIST MODELING– 3D GRAPHIC OUTPUT / IMPACT OF GRADES– ADVANCED SIGNAL CONTROL LOGIC
• IMPORTANT FOR DEMAND RESPONSIVE OPERATION• IMPORTANT FOR SIGNAL PREEMPTION
![Page 22: TRAFFIC MICROSIMULATION & 3-D VISUALIZATION Presenters: Fadi Emil Nassar, P.E. Veronica A. Boza, E.I. FDOT – MAY 4, 2007.](https://reader036.fdocuments.net/reader036/viewer/2022062304/56649ea85503460f94bac46e/html5/thumbnails/22.jpg)
VISSIM (CONTINUE)
ADVANTAGES:– ADVANCED ORIGIN-DESTINATION– ROUTING FOR ALL VEHICLE TYPES– DYNAMIC ASSIGNMENT (VISUM)– ROUNDABOUT SIMULATION– UNLIMITED VEHICLE TYPE
• IMPORTANT FOR TOLL PLAZA• AIRPORT CURB SIDE OPERATION
– FLEXIBLE DATA COLLECTION– INTERFACE WITH 3-D MODELER– DYNAMIC VISUALIZATION OF RESULTS
![Page 23: TRAFFIC MICROSIMULATION & 3-D VISUALIZATION Presenters: Fadi Emil Nassar, P.E. Veronica A. Boza, E.I. FDOT – MAY 4, 2007.](https://reader036.fdocuments.net/reader036/viewer/2022062304/56649ea85503460f94bac46e/html5/thumbnails/23.jpg)
VISSIM (CONTINUE)
DISADVANTAGES:– NOT AS WIDELY USED IN FLORIDA– EXPENSIVE (WITH TRANSIT OPTION)– CODING OF DESIRED OUTPUT PARAMETERS– FLEXIBILITY REQUIRES GREATER KNOWLEDGE AND
CODING EFFORTS – NO STANDARD SUMMARIES WHICH COMPLICATE
REVIEW PROCESS– NO SIGNAL OPTIMIZATION (INTERFACES WITH
SYNCHRO)
![Page 24: TRAFFIC MICROSIMULATION & 3-D VISUALIZATION Presenters: Fadi Emil Nassar, P.E. Veronica A. Boza, E.I. FDOT – MAY 4, 2007.](https://reader036.fdocuments.net/reader036/viewer/2022062304/56649ea85503460f94bac46e/html5/thumbnails/24.jpg)
MIAMI - PROPOSED ROUNDABOUT
![Page 25: TRAFFIC MICROSIMULATION & 3-D VISUALIZATION Presenters: Fadi Emil Nassar, P.E. Veronica A. Boza, E.I. FDOT – MAY 4, 2007.](https://reader036.fdocuments.net/reader036/viewer/2022062304/56649ea85503460f94bac46e/html5/thumbnails/25.jpg)
DATA COLLECTION
GEOMETRY & LAYOUTTRAFFIC CONTROL: SIGNAL & SIGNVOLUMES (RECONCILE COUNTS)DATA FOR CALIBRATION
– TRAVEL TIME– AVG & FREEFLOW SPEED– QUEUE LENGTH– OBSERVATIONS / WARNING SIGNS
![Page 26: TRAFFIC MICROSIMULATION & 3-D VISUALIZATION Presenters: Fadi Emil Nassar, P.E. Veronica A. Boza, E.I. FDOT – MAY 4, 2007.](https://reader036.fdocuments.net/reader036/viewer/2022062304/56649ea85503460f94bac46e/html5/thumbnails/26.jpg)
BASE MODEL DEVELOPMENT
DEVELOP LINK-NODE DIAGRAMNODE NUMBERING / PROPER CODINGBASE MAPPINGDATA COLLECTION / FIELD REVIEWCHECK INPUT DATABALANCE VOLUMESDEVELOP O-D MATRIX (RAMPS)SIGNAL TIMINGQA/QC – CHECK SIMULATION RUNSVERIFIABLE / REPRODUCIBLE / ACCURATE
![Page 27: TRAFFIC MICROSIMULATION & 3-D VISUALIZATION Presenters: Fadi Emil Nassar, P.E. Veronica A. Boza, E.I. FDOT – MAY 4, 2007.](https://reader036.fdocuments.net/reader036/viewer/2022062304/56649ea85503460f94bac46e/html5/thumbnails/27.jpg)
VOLUME CALIBRATIONCONGESTED CONDITIONS
(EX: SR112)
DATA COLLECTION INITIAL CALIBRATION RESULTSADDITIONAL INVESTIGATIONDEMAND PEAK HOUR VOLUMESTRAVEL TIMES
![Page 28: TRAFFIC MICROSIMULATION & 3-D VISUALIZATION Presenters: Fadi Emil Nassar, P.E. Veronica A. Boza, E.I. FDOT – MAY 4, 2007.](https://reader036.fdocuments.net/reader036/viewer/2022062304/56649ea85503460f94bac46e/html5/thumbnails/28.jpg)
DATA COLLECTION
Legend:Signalized IntersectionUnsignalized IntersectionRoadway Split AreasTurn Lane Storage Length
Posted Speed Limit
1
100'
Ockeechobee Rd/N. River Drive
From SR 112Ramp
1?
130'
110'110'
ToFlyover
250'
Flyover
75'
325'
ToAirport
FlyoverFrom NB
Le Jeune Road
23
4
5
7
EBL used to re-direct traff ic to NBLe Jeune fromOckeechobee &Le Jeune Int.
1
Bridge overMiami River From SR 112
Ramp
NW 36 Street
5
WB - NW 36 Street
2
6
3
FromSR 112 500'
4
7
EB -NW 36 Street
To EB SR 112Ramp
ToNW 42 Ave
6
100'
Driveway
65'
WB SR 112 Ramp toOckeechobee Road:
Fourth lane starts west ofNW 32nd Ave and ramp
separat ion starts atNW 35th Ct
30MPH
30MPH
1
11
6
5
4
2
1
9
108
3
Intersection Count Location
Machine Count Location
Ramp Count Location
1
1
5
4
6
9
1
3
7
8
2
7
6
5
4
3
2
1
8
7
12
![Page 29: TRAFFIC MICROSIMULATION & 3-D VISUALIZATION Presenters: Fadi Emil Nassar, P.E. Veronica A. Boza, E.I. FDOT – MAY 4, 2007.](https://reader036.fdocuments.net/reader036/viewer/2022062304/56649ea85503460f94bac46e/html5/thumbnails/29.jpg)
![Page 30: TRAFFIC MICROSIMULATION & 3-D VISUALIZATION Presenters: Fadi Emil Nassar, P.E. Veronica A. Boza, E.I. FDOT – MAY 4, 2007.](https://reader036.fdocuments.net/reader036/viewer/2022062304/56649ea85503460f94bac46e/html5/thumbnails/30.jpg)
INITIAL CALIBRATION RESULTS
VISSIM not replicating observed queues with measured volumes:– Traffic backups on ramps and intersections
– Tri-Rail and Freight Train Impact on traffic
Significant difference is travel times
Need for additional investigation
![Page 31: TRAFFIC MICROSIMULATION & 3-D VISUALIZATION Presenters: Fadi Emil Nassar, P.E. Veronica A. Boza, E.I. FDOT – MAY 4, 2007.](https://reader036.fdocuments.net/reader036/viewer/2022062304/56649ea85503460f94bac46e/html5/thumbnails/31.jpg)
ADDITIONAL INVESTIGATION Intersections Peak Hour Factors (PHF) greater than 0.95
suggests constrained conditions.
Intersection AM Peak Hour PM Peak Hour
Le Jeune Rd/SE 8 St 0.98 0.97
Le Jeune Rd/Okeechobee Rd: 0.98 0.99
Le Jeune Rd/NW 36 St 0.97 1.00
Le Jeune Rd/NW 31 St 0.95 0.95
NW 36 Street/Lee Dr 0.98 0.98
NW 36 St/S. River Dr 0.97 0.95
NW 36 St/N. River Dr 0.97 0.97
![Page 32: TRAFFIC MICROSIMULATION & 3-D VISUALIZATION Presenters: Fadi Emil Nassar, P.E. Veronica A. Boza, E.I. FDOT – MAY 4, 2007.](https://reader036.fdocuments.net/reader036/viewer/2022062304/56649ea85503460f94bac46e/html5/thumbnails/32.jpg)
ADDITIONAL INVESTIGATION
Location TO/FROMQuality Counts
FDOT Stations
AM PM AM PM
WB SR-112 Off Ramps
To Okeechobee RdTo NW 36 StreetTo AirportTo SB Le Jeune Rd
5.2%8.0%6.7%6.7%
3.5%6.3%7.5%8.9%
4.2%8.7%n/a6.3%
11.1%5.8%n/a7.2%
EB SR-112 On Ramps
From Okeechobee RdFrom NW 36 StreetFrom AirportFrom NB Le Jeune Rd
12.3%9.7%4.2%5.7%
4.7%8.1%9.5%7.6%
10.9%n/an/a4.2%
5.3%n/an/a8.4%
Peak to daily factors (K-factor) less than 8.5% on freeways and 9.0% for arterials suggest constrained conditions.
Ramps:
![Page 33: TRAFFIC MICROSIMULATION & 3-D VISUALIZATION Presenters: Fadi Emil Nassar, P.E. Veronica A. Boza, E.I. FDOT – MAY 4, 2007.](https://reader036.fdocuments.net/reader036/viewer/2022062304/56649ea85503460f94bac46e/html5/thumbnails/33.jpg)
ADDITIONAL INVESTIGATION
Location AM PM
Le Jeune Rd, South of NE 8 St 5.8% 7.1%
Le Jeune Rd, South of NW 31 St 5.8% 4.4%
N. River Dr, West of Flyover merge
8.6% 6.6%
N. River Dr, North of NW 36 St 6.6% 5.8%
N. River Dr, South of NW 36 St 6.9% 7.5%
S. River Dr, East of Le Jeune Rd 6.5% 6.2%
S. River Dr, West of NW 36 St 6.5% 9.4%
NW 36 St, West of N. River Dr 6.5% 6.4%
NW 36 St, East of N. River Dr 5.1% 6.1%
Arterials
![Page 34: TRAFFIC MICROSIMULATION & 3-D VISUALIZATION Presenters: Fadi Emil Nassar, P.E. Veronica A. Boza, E.I. FDOT – MAY 4, 2007.](https://reader036.fdocuments.net/reader036/viewer/2022062304/56649ea85503460f94bac46e/html5/thumbnails/34.jpg)
VOLUME ADJUSTMENT
Adjustment to achieve demand volumes based on FDOT Quality/Level of Service Handbook:– Ramps:
•Minimum K100 is 8.5%; and
•Average Peak to daily ratio percent difference is 28% and 26% for the AM and PM Peak Hours respectively.
– Arterial Road:•Minimum K100 is 9.0%; and
•Average Peak to daily ratio percent difference is 27% for both the AM and PM Peak Hours.
![Page 35: TRAFFIC MICROSIMULATION & 3-D VISUALIZATION Presenters: Fadi Emil Nassar, P.E. Veronica A. Boza, E.I. FDOT – MAY 4, 2007.](https://reader036.fdocuments.net/reader036/viewer/2022062304/56649ea85503460f94bac46e/html5/thumbnails/35.jpg)
VOLUME BALANCING (SEASONAL FACTOR / TRUCKS / ETC)
![Page 36: TRAFFIC MICROSIMULATION & 3-D VISUALIZATION Presenters: Fadi Emil Nassar, P.E. Veronica A. Boza, E.I. FDOT – MAY 4, 2007.](https://reader036.fdocuments.net/reader036/viewer/2022062304/56649ea85503460f94bac46e/html5/thumbnails/36.jpg)
CALIBRATION / VALIDATIONDRIVER BEHAVIOR
– STARTUP DELAY & REACTION TIME– MINIMUM HEADWAY/GAP ACCEPTANCE– LANE CHANGE PARAMETERS– CAR FOLLOWING SENSITIVITY
VEHICLE CHARACTERISTIC– TRAFFIC COMPOSITION– MAXIMUM ACCELERATION / DECELERATION
ROADWAY CHARACTERISTICS– FREE FLOW SPEED– CHANNELIZATION– PARKING ACTIVITY
![Page 37: TRAFFIC MICROSIMULATION & 3-D VISUALIZATION Presenters: Fadi Emil Nassar, P.E. Veronica A. Boza, E.I. FDOT – MAY 4, 2007.](https://reader036.fdocuments.net/reader036/viewer/2022062304/56649ea85503460f94bac46e/html5/thumbnails/37.jpg)
TRAVEL TIMES AM Peak Hour
SegmentCollected Travel
Time Range (Sec)
VISSIM Travel Time
(Sec)
SR-112 Off ramp
232 - 291 235
EB NW 36 St 178 - 295 195
WB NW 36 St 273 242 PM Peak Hour
SegmentCollected Travel
Time Range (Sec)
VISSIM Travel Time (Sec)
SR-112 Off ramp
430 - 580 394
EB NW 36 St 180 - 655 204
WB NW 36 St 229 - 380 368
NB Le Jeune Rd
248 - 303 266
SB Le Jeune Rd 281 - 445 285
![Page 38: TRAFFIC MICROSIMULATION & 3-D VISUALIZATION Presenters: Fadi Emil Nassar, P.E. Veronica A. Boza, E.I. FDOT – MAY 4, 2007.](https://reader036.fdocuments.net/reader036/viewer/2022062304/56649ea85503460f94bac46e/html5/thumbnails/38.jpg)
ALTERNATIVE ANALYSIS / MOE
SIMULATION GREAT FOR ALT ANALYSIS SIMPLIFIED REALITY / LIMITATIONS ESTABLISH MOE & MATRIX EVALUATION
– SPEED– DENSITY– TRAVEL TIME– QUEUE– DELAY
PERFORM MULTIPLE RUNS (SEED #) SENSITIVITY ANALYSIS PRESENTATION OF RESULTS
– GRAPHIC SIMULATION– OPERATIONAL RESULTS