Preview our new website

Service Implementation Plan

2018 Service Implementation Plan

Each year, Sound Transit's Service Planning Department prepares a Service Implementation Plan (SIP) to guide the delivery of ST Express Bus, Sounder commuter rail, and Link light rail services. The SIP describes service and revisions proposed for the upcoming budget year, together with preliminary proposals and financial estimates for the subsequent five-year period.

The original 2018 SIP was adopted in late 2017, and did not propose any major changes to service. A subsequent amendment to the SIP was adopted by the Board of Directors in March 2018, which proposed service changes to the I-90 corridor for implementation in September 2018 to accommodate construction of East Link and the new Judkins Park station.

Documents in PDF format require the free Adobe Reader to view.

Current materials

PDF icon2018 Service Implementation Plan (Complete)
PDF icon2018 Service Implementation Plan (Executive Summary)
PDF iconDraft 2018 Service Implementation Plan (Complete) - Amendment
PDF iconDraft 2018 Service Implementation Plan (Executive Summary) - Amendment

Updated service standards

The 2014 service standards have been approved by the Sound Transit board. These guidelines will be used to plan new services and manage existing bus and train assets. In 2014, the proposed revisions focus on updates to the evaluation and adjustment of existing services.

Read about the changes:
 2014 Service Standards and Performance Measures

Materials from previous years

2017 Service Implementation Plan (Complete)

2017 Service Implementation Plan Executive Summary (Complete)

2016 Service Implementation Plan (Complete)

2016 Service Implementation Plan Executive Summary (Complete)

2015 Service Implementation Plan (Complete)

2014 Service Implementation Plan pdf (Complete)

2014 Service Implementation Plan Executive Summary (Complete)

2013 Service Implementation Plan pdf (Executive Summary)

2012 Service Implementation Plan pdf (Executive Summary)

2011 Service Implementation Plan pdf (Executive Summary)

2010 Service Implementation Plan pdf (Executive Summary)

2009 Service Implementation Plan pdf (Executive Summary)

2008 Service Implementation Plan pdf (Executive Summary)

2007 Service Implementation Plan pdf (Executive Summary)

2006 Service Implementation Plan pdf (Executive Summary)

2005 Service Implementation Plan pdf (Executive Summary)

Stay informed! Sound Transit offers a free email subscription service. Select "Service Planning" from the list of subscription items to receive an email update whenever new information is added to this page.