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Portland Bureau of Transportation

Phone: 503-823-5185

Fax: 503-823-7576

1120 SW Fifth Ave, Suite 800, Portland, OR 97204

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Planning Process

ETC Planning Process & Timeline:
The planning process began in the winter of 2017 and will conclude by the Spring of 2018.


Candidates being studied during the planning process:

This planning process is primarily focused on several bus lines that are part of the TriMet Frequent Service network. However, Enhanced transit can also include streetcar. In fact, many of the treatments in the Enhanced Transit Toolbox have been applied to our Portland Streetcar lines. During this planning process, we are studying the following candidate bus lines and segments of bus lines:

  1. Line 4N (Central Segment only) – from Rose Quarter to N Killingsworth
  2. Line 6 – MLK Jr Blvd/Jantzen Beach
  3. Line 9 – SE Powell Blvd
  4. Line 12 – NE Sandy Blvd
  5. Line 14 – SE Hawthorne/Foster Rd
  6. Line 15 NW 23rd (west segment only) – W Burnside and NW 23rd up to Vaughn
  7. Line 20 – E Burnside/SE Stark St
  8. Line 54/56 (B-H Hwy Segment only) – Beaverton-Hillsdale Hwy, both lines combined
  9. Line 72 – Killingsworth/82nd Ave
  10. Line 73 – 122nd Ave
  11. Line 75 – Cesar Chavez/Lombard

ETC Planning Map1

Initial approach for identifying where it is most important to focus:

Our approach to identifying where it is most important to make Enhanced Transit improvements is grounded in understanding transit operations and guided by policy and ridership demand. TriMet has a wealth of operational data to analyze. The Portland Comprehensive Plan and Transportation System Plan provides policy guidance. Both help shape our proposed criteria for evaluating candidates for Enhanced Transit.

Initial Six Criteria/Indicators for evaluating candidates:

  • Transit Reliability/Delay – Where buses are delayed by traffic congestion and it takes longer to travel during the most congested periods of the day compared to free flow conditions. Calculation: 90th to 10th Percentile Bus Operating Speed Variance.
  • Transit Speeds – Where buses are slower throughout the day compared to the posted speed. Calculation: Average Bus Operating Speed to Posted Speed Limit.
  • Transit Dwell Time – Where buses are stopped at bus stops longer. Calculation: Transit Dwell Time (with the door open) to overall Transit Run Time.
  • Current Transit Trips – Where transit ridership greater based on the Average Existing Weekday Transit Trips. Calculation: Entering ridership load + boardings.
  • Equity – Where in our community there are concentrations above the citywide average of the following populations:
    • People of Color
    • Low Income Households
    • Limited English Proficiency Households
  • Forecasted Future Population and Job Growth between 2010 and 2035 – Where forecasted increase in population and jobs suggests more transit demand in the future, based on the preferred Growth Scenario for the Portland 2035 Comprehensive Plan.

Initial Evaluation Results

The maps display the score results based in the initial analysis using the criteria/indicators. Higher scores indicate where it is most important to focus.