2018-04-10 SM 9a Supp Airport Drives Traffic Enhancement

• Roadway system designed 1968 – 50 years ago – 5 million annual passengers • Major realignment for Light Rail 2008 – Right of way/Relocation of northbound lanes – Prior condition - gridlock within inboard roadway loops typical – Removed return to terminal loop ramps – Removed 40% of recirculating vehicles 1968-2018 Landside Access Critical to SEA Managing a Complex Balance Requires Comprehensive Long-Term Strategic Policy Intelligent Traffic System (ITS) • Sensors attached to gantries on Airport Expressway and Air Cargo Road capture vehicle count and speed • Data can determine a general level of service on roadways Powerful Data Available for Improvement Initiatives Traffic Mitigation Plan • Instituted for 2012 holiday season • Implemented as needed during peak periods 9PM-1AM • Revised and enhanced Thanksgiving 2017 • Automated alerts to Airport Duty Managers – Coordinate resources and communication to stakeholders • POS Police • GT Operators • City of SeaTac Operational Mitigations Have Limited Effectiveness Traffic Mitigation Plan (Cell Phone Lot) • All cell phone patrons utilize Right turn only onto 170th Street to International Boulevard • Right turn on International Boulevard to South Airport Entrance at 182nd Street • Right turn to 182nd Street and onto Airport Expressway system to terminal Traffic Mitigation Plan Level 1 Traffic Mitigation Plan (Commercial Traffic) • Coordinated closure of on-ramp from Air Cargo Road to Southbound Expressway • Traffic rerouted on 170th Street to International Boulevard to 182nd Street entrance • Allows greater distance for taxis and TNCs to merge into left…

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PSCAA Advisory Council Meeting Agenda
Add to CalendarMWednesday Mar 11, 9:00am - 11:35am
1904 3rd Avenue, Suite 105, Seattle, WA 98101
Call to order – Roll Call – Quorum Established – Land Acknowledgement We would like to acknowledge that our Agency operates in four present-day counties, which are the traditional lands of the Coast Salish people, past and present. This acknowledgement does not take the place of authentic relationships with indigenous communities in our jurisdiction and [...]