Apply DynusT Model for Incident Management along Loop 101 Corridor

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1 Apply DynusT Model for Incident Management along Loop 101 Corridor Lili(Leo) Luo, P.E. ITS/Safety Engineer Sarath Joshua, P.E. ITS/Safety Program Manager

2 What do Transportation Models do? Help us answer the What if questions. One example: What if we adjust the splits given the existing Turning Movement Volumes? Would that reduce delay? With one catch: The underlying method/algorithm of the model is sound or at least its limitations are well understood.

3 Example: SYNCHRO One of the most widely used signal timing models Implementation of HCM method and other analytical methods Did not account for intersection spill back or turn bay blockage, etc. Limitations may be addressed through timing fine tuning process --Still considered a very useful tool for signal timing analysis

4 Role of Models We should not discard all Models because they are not sufficiently realistic Need to recognize that, at best, models are a close representation of reality Models are very useful because they can help answer complex what if questions

5 What is DTA? A more realistic representation of how each individual decide which path he/she is going to take from origin to destination. An aggregation of this path choice decision from all of the individuals forms the volumes on our street network.

6 MAG DynusT Model Network 11,200 Sq Miles # of links: # of nodes: # of signalized intersections: 2933 # of zones: Million Trips

7 MAG DynusT Model Network (cont.) Covers all the major arterials and the entire freeway system within the current planning boundary Simulates traffic across the entire network for 24hr for a typical work day Capable in converting into VISSIM model for more detail hot spot analysis and visualization

8 Model Calibration--Count AM Simulation Count V. Actual Count PM Simulation Count V. Actual Count

9 Model Validation Bottleneck AM Dynust Output AM MAG Bottleneck Study PM Dynust Output PM MAG Bottleneck Study

10 Model Validation Travel Time 7:30AM-8:00AM US60 to L202 L202 to US60 SH51 to L202 I-10 to SH51 I-17 to I-10 TT Survey Simulation Travel Time Along Loop 101NB by Segments

11 Application on Loop 101 Verify the pre-designed diversion plan Focus resources on major diversion routes Promote coordination Improve Incident Response, improve safety and reduce congestion

12 The Original Plan PINNACLE PEAK SECTOR 3 BELL PIMA FWY / LOOP 101 LOCAL INCIDENT DETOUR PLAN GREENWAY THUNDERBIRD CACTUS SHEA SECTOR 2 STRATEGIC SECTOR # DOUBLETREE McCORMICK VIA DE VENTURA INDIAN BEND McDONALD CHAPARRAL INDIAN SCHOOL SECTOR 1 SAMPLE INCIDENT LOCATION POSSIBLE DETOUR ROUTES LOCAL DYNAMIC MESSAGE SIGN THOMAS McDOWELL McKELLIPS Note: Scottsdale does not control any of the freeway interchange signals south of Indian Bend. In order to have better remote control of traffic exiting the freeway during an incident we would need communications to those signals.

13 2013 Western ITE Conference Freeway Statistics Upstream Flow

14 2013 Western ITE Conference Freeway Statistics Upstream Travel Time

15 Freeway Statistics 6 Miles Upstream

16 Arterial Statistics Suggested Diversion Routes 2013 Western ITE Conference

17 Arterial Statistics Hayden NB Traffic Flow

18 Arterial statistics Volume Time Volume Street Hayden Direction NB Location Between Princess Drive and Loop 101 Link# FromNode ToNode : : : : : : : : :

19 Arterial Statistics Turning Movement Counts Intersection Dir Movement 6:30 6:45 7:00 7:15 7:30 7:45 8:00 8:15 8:30 8:45 9:00 Pima&McDo well SB right SB left EB left EB through WB right WB through

20 Recommendations PINNACLE PEAK SECTOR 3 BELL GREENWAY THUNDERBIRD CACTUS SHEA SECTOR 2 DOUBLETREE McCORMICK VIA DE VENTURA INDIAN BEND McDONALD CHAPARRAL INDIAN SCHOOL THOMAS McDOWELL McKELLIPS SECTOR 1

21 What else the DTA models can do? Regional or area-wide traffic operations strategies have system wide impacts One-way Couplets V. Two-way Streets Reversible Lanes V. Fixed-use Lanes Traffic Incident Management Strategies Major Construction Traffic Control Emergency Evacuation Integrated Corridor Management