Dynamic Corridor Congestion Management (DCCM) Project Streets and Freeways Subcommittee Meeting May 19, 2016
Background South Bay freeways and highways (like PCH) are heavily congested that affect local streets operations 2
The Integrated Corridor Management (ICM) Approach to Congestion Reduction Problem: Surface transportation congestion Traditional approach: Optimization of individual networks (freeway, arterials, transit, etc. each considered separately) ICM approach: Integrated corridor-wide operations to optimize entire system (not just individual networks) ICM Manages: Total Corridor Capacity All modes and routes together Corridor as a single system 3 USDOT Integrated Corridor Management Vision
DCCM Benefits and Opportunities 1. Improved corridor throughput 2. Reduced impact of incidents on freeways and arterials 3. Enhanced performance measurement capability 4. Improved information sharing 5. Better informed travelers 6. Opportunity for regional stakeholders to participate in developing a model for automated operations 4
DCCM Freeway/Arterial Coordination Example Scenario Accident blocks several lanes on NB I-110 during morning rush hour Drivers exit to Figueroa and Vermont to detour around the incident Current response I-110 DCCM-enabled response 1. Arterial signal system unaware of increased Vermont Figueroa 1. Freeway management system alerts arterial system to arterial demand increased demand 2. Fixed/time-of-day signal 2. Signal system automatically timings not set up to implements agreed-upon accommodate new signal timing plan designed for demand the scenario 5 3. Traffic backs up on arterials, turn pockets, and freeway off-ramps 3. Traffic flows efficiently along parallel arterials around the incident with minimized impact to the arterial network
South Bay DCCM Project Status 1. Identify a pilot corridor on which to deploy a DCCM freeway-arterial coordination system 2. Develop a concept of operations to guide implementation 3. Develop Memorandums of Understanding (MOUs) among all involved stakeholders 4. Conduct a before/after system evaluation for the initial pilot project 5. Designing and deploying the Decision Support System (DSS) 6. Designing and Deploying Arterial Management System (AMS) Complete Complete Complete Before Study Complete In Development In Development 6
Task 1: Corridor Study Seven South Bay corridors evaluated 1. SR-91 (from I-110 to Central Ave) 2A. I-110, from SR 47 to I-405 2B I-110 (from I-405 to Imperial Hwy.) 3. I-105 (from Sepulveda Blvd to Central Ave) 4A. I-405 (from I-710 to I-110) 4B. I-405 (from I-110 to I-105) 4C. I-405 (from I-105 to SR-90) 7
Task 1: Corridor Study Evaluation Criteria Five categories of evaluation criteria: 1. System demand 2. Physical infrastructure 3. ITS infrastructure 4. Institutional coordination challenges 5. ICM readiness 8
Dynamic Corridor Congestion Management (DCCM) Seven South Bay corridors evaluated Corridor 2B Selected I-110 (I-405 to Imperial Hwy) 9
Dynamic Corridor Congestion Management (DCCM) DCCM approach: Integrated corridor-wide operations to optimize entire system (not just individual networks) DCCM Operational Scenarios : 1. Moderate-level incident on freeway (partial lane closure) 2. Major incident on freeway (all lanes closed) 3. Moderate incident on arterial (partial lane closure) 4. Major incident on arterial (all lanes closed) 5. Incident on freeway on-ramp 6. Incident on freeway off-ramp 7. Recurrent congestion conditions 10
High-Level Architecture Arterial Management System In Process Decision Support System In Process Data Hub In Process Dynamic Corridor Ramp Metering Complete 11 2
Arterial Management System (AMS) AMS coordinates: Caltrans traffic signal timings with existing external stakeholder systems, including: LACDPW's Information Exchange Network (IEN) LADOT s Adaptive Traffic Control System (ATCS) 12
Decision Support System (DSS) DSS purpose: implement effectively in the South Bay area: Freeway ramp meter / arterial traffic signal coordination Traffic signal operation coordination with adjacent city/county traffic signal systems DSS objective: develop an interface to execute the DCCM strategy by feeding traffic information to a future Decision Support System, with the purpose of coordinating freeway/arterial traffic operations for congestion relief as defined in DCCM ConOps. 13
Who Else is Implementing DCCM Solutions? Integrated corridor management systems are rapidly being implemented on major corridors across the country: Seattle (I-5) Oakland (I-80) (I-880) 14 San Diego (I-15) Portland (I-216) San Mateo (US-101) Los Angeles (I-210) Phoenix (I-10) Denver (I-75) Minneapolis (I-395) Dallas (US-75) San Antonio (I-10) Milwaukee- Chicago Houston (I-10) Detroit (I-75) Southwest Penn. Montgomery County (I-270) Miami-Dade (I-95)
15 Questions?