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TriMet study: most Clackamas routes meet market standards; lines 34 and 156 lag on frequency
Summary
TriMet officials told Clackamas County leaders that, using a market-indexed analysis, most routes in the county meet or exceed recommended service standards but line 34 and line 156 fall short on frequency; TriMet and county officials debated trade-offs between coverage and frequency and shuttle solutions for hilly or low-density areas.
Tom Mills, director of Mobility Planning and Policy at TriMet, told Clackamas County officials that a TriMet level-of-service study found most routes serving the county "met or exceeded the market" but identified specific frequency and span gaps on some lines. "We don't have enough revenue to serve all origins and all destinations at all times of the day," Mills said, framing the study as a choice between spreading limited service widely or concentrating it where ridership is highest.
The study combined ten market factors — including population density, median household income and employment density — to score census block groups across the TriMet district. TriMet then assigned frequency and span standards by market quartile: for example,…
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