Active Traffic Management Jane Addams Memorial Tollway (I-90) SmartRoad Operational Features and Algorithms Friday, September 23, 2016 Scott Lee, P.E., Senior Project Manager, Parsons Elyse Morgan, TOC Manager, Illinois Tollway 1
History of ATM Some early implementations of managed lanes in North America Widely adopted for decades in Europe ( managed motorways ) Recent scanning tour of European traffic management systems spawned ATM deployments in Washington State and Minnesota Newest deployments in Virginia (I-66) and California (I-80) John Lodge Freeway (Detroit, Michigan) circa 1960 I-66 Westbound Corridor (State of Virginia near Washington DC) Croft Interchange (Near Manchester, UK) Presented by Scott Lee on October 10, 2016 2
Myriad of Operational Opportunities Hard Shoulder Running Variable Speeds Dynamic Junction Control HOV and HOT Reversible Lane Queue Warning Merge Control Illinois Tollway Con Ops Identified Lane 0, now called Flex Lane Variable Advisory Speeds Optional Hard Shoulder Running Seems Pretty Simple Presented by Scott Lee on October 10, 2016 3
Keys to Success Coordination with Responders Defining Operational Procedures Multi-Event Strategies Application of Speeds Computational Relational Recommendations Operator Interventions Maximum Slow Speed Number of downstream Consecutive VDS at or below Maximum Slow Speed to Declare Possible EOQ Speed Differential to declare a possibe EOQ Number of Upstream Consecutive VDS at or above downstream speed to Declare Possible End of Queue 45 3 15 2 MPH MPH VDS VDS VDS VDS VDS VDS VDS VDS VDS I 5 H G 4 F 4 E D C B A 0 5 0 55 54 55 58 40 41 39 44 55 GANTRY 3 2 FURTHEST DOWNSTREAM VDS ALL MUST BE GREATER THAN OR EQUAL TO 55 GANTRY 1 3 FURTHEST DOWNSTREAM VDS ALL OF WHICH MUST BE LESS THAN OR EQAUAL TO 45 MPH AVERAGE = 40 MPG GANTRY 2 Presented by Scott Lee on October 10, 2016 4
Lane Control Signals - Arrows and X s How to apply them to the Gantries Content Gantry Selection Default Displays Desired vs Lessons Learned Consideration for Responders and Scott s Law Yellow Arrows Approval Process Operational Scenario Detailing Graphic Content and Usage Approval FHWA and IDOT Coordination Consistency with Outreach efforts Presented by Scott Lee on October 10, 2016 5
Presented by Scott Lee on September 23 rd,2016 6
Variable Advisory Speeds When to Apply? Congestion End-of-Queue Special Events such as weather Application among multiple gantries Gantry Differentials Minimum Speeds Automated Computations Gantry to nearby conditions analysis Trooping Computational Control How many cycles? Testing Data! Ability to Evaluate in Real-Time Presented by XXX on October 10, 2016 7
Presented by XXX on October 10, 2016 8
Lane 0 Operations Pace Bus Agreement Discussions Lane 0 use by Pace when congestion conditions arise Maintaining primary use for maintenance, and responder use during all other conditions Sectional Control assignments based on Pace routing and interchanges Notifications Relocation considerations for Lane 1 Events Presented by Scott Lee on October 10, 2016 9
1 Event from Operator or Dispatch DMS/LCS Response Plan Workflow - TIMS 4 Operator Review of Potential Event Monitor Event CCTV Dispatch Notes Confirm (TIMS) 2 Update Event Update Other Parameters TIMS UI and Map Refresh upon device updates Dispatch Updates ATM Response Plan Generated Change Event type, Lane Blockage, and/ or Impact Lanes Cleared 5 End RP End Event Send Final Messages to DMS/LCS Displays ATM Corridor Rules and Corridor(per ATM Design) Competing Events DMS Rules Event Response 3 Review DMS/LCS Response Plan Modify LCS Plan? Yes Email Supervisor Notify Operator via Dialog Activate Response Plan? Update Gantry Queues VASS and LCS Traffic Conditions No Gantry/Device Failures Event Details Notes: Notifications (Email/Twitter) and Gateway Publishing NOT discussed here in detail. These Responses are generated at Response Plan Generated, activated with Activate Response Plan independently, and ended with End RP Function/Control Owner Operator Action TIMS ATM Actions TIMS Existing Response Plan Functions Event Management - TIMS 1 Detection 2 Confirmation 3 Response 4 Clearance and Monitor Dispatch Actions/Info 5 Closure Presented by Scott Lee on October 10, 2016 10
Taking Care of the Operators Event Focused Design and Operation Managing traffic not devices Integrated Event Management Strategy Presentation of Status and Recommendations to the Operator Provide Consistent Recommendations Manage of Conflict and Device Issues Opportunities to Modify Presented by Scott Lee on October 10, 2016 11
Design to Deploy Presented by Scott Lee on October 10, 2016 12
QA Build 4 Sample Control Presented by Scott Lee on October 10, 2016 13
Supporting Controls Presented by Scott Lee on October 10, 2016 14
Next Steps Test Messages while construction completes Integration of Equipment + Vehicle Detector Stations to evaluate and tune Variable Advisory Speed settings Operator Training Presented by Scott Lee on October 10, 2016 15
Scott Lee, P.E. Sr. Project Manager Parsons scott.lee@parsons.com 847-925-0120 Elyse Morgan Traffic Operations Center Manager Illinois Tollway emorgan@getipass.com 630-241-6800 THANK YOU 16