This chart summarizes Metro’s most recent stop-level Automatic Passenger Count (APC) data from Route 36. The bars show the average daily number of boardings and deboardings by stop, and the origin of the bars is the average daily “load approaching” for each stop; i.e. the number of riders on the bus as it approaches each stop. Thin colored lines show the load approaching by time period. This is the passenger data Metro’s planners refer to when they do their work.
There are lots of caveats that accompany this data. A degree of error is intrinsic to APC technology. In the average, these errors are statistically “washed out” to a higher degree as the sample sizes are increased. Thus there is more confidence and less error in the all-day average than in any one time period, and similarly between (say) the mid-day data than the night data.
The data do not quite begin at zero probably because of the complicated configuration of the 36 at its northern end: some trips are through-routed as 1s, others terminate at 3rd & Lenora, others (diesel peak trippers) at 6th & Lenora. It’s also worth noting that the data begins at the Fall ’09 service change, when the 36 was extended from Beacon & Myrtle to Othello Station, so the data partially reflect the initial bedding-in of Link and the revised 36 alignment, when ridership patterns had not yet adjusted to the new network.
Here are a few things that stand out to me:
* S Jackson St, including the parts outside the RFA, is a blockbuster ridership corridor with a constant on-off churn, comparable to 3rd Ave. This bodes will for the First Hill streetcar’s ridership.
* Density and land use drives ridership. Even ten minute headways doesn’t seem to motivate residents in Mid-Beacon to to ride the bus to shop at the commercial area at Othello, whereas the data suggest that happens much more between North Beacon Hill and Little Saigon. Ridership fizzles out, with the bus steadily unloading as it leaves downtown.
* I wonder if the early morning ridership spikes that begin and end at 5th & Jackson could be related to Sounder? The VA hospital is evident in the “Beacon/EXIT [VA HOSP]” AM/PM peak data.
Those of you who live or work on Beacon Hill, please let us know in the comments what else you see in this data that I’ve missed.