COMMISSION 
AGENDA MEMORANDUM                        Item No.          9a 
BRIEFING ITEM                             Date of Meeting     September 25, 2018 
DATE:     September 19, 2018 
TO:        Port of Seattle Commission 
Stephen P. Metruck, Executive Director 
FROM:    Lance Lyttle, Managing Director, Aviation Division 
Clare Gallagher, Director Capital Project Delivery, Public Affairs 
SUBJECT:  Ground Transportation to the Airport 
EXECUTIVE SUMMARY 
The Port of Seattle is committed to providing quality customer service, reducing congestion,
and minimizing environmental impacts of vehicles at Seattle-Tacoma International Airport (Sea-
Tac). This includes implementing strategies and tactics to move people out of private vehicles
and into higher-occupancy modes. 
The purpose of this briefing is to review with Commissioners a proposed ground transportation
framework for developing ground transportation programs at the airport. The briefing will also
include a review of the Ground Transportation Access Plan (GTAP) and the recommended
strategies and tactics from the study. 
The framework consists of Guiding Principles, Goals, Strategies and Tactics. These elements
have been drawn from the September Commissioner briefings, the July 10th Travel to and From
the  Airport  Study  Session,  and  the  GTAP. The   proposed  guiding  principles  include:
environmental effects, congestion relief, customer choice, economic opportunity/social equity 
and revenue generation. The goals include specific targets for emission reductions, travel time
and mode shift. 
The briefing on GTAP will review the study approach, as well as data from the study and the
outcome identifying the top 10 ground transportation strategies and tactics. A timeline for
anticipated  Commission  briefings  and  possible  action  on  ground  transportation  items,
beginning in Q4, will also be presented. 
ATTACHMENTS TO THIS BRIEFING 
(1)   Presentation slides 

Template revised April 12, 2018.