Show historic speed on stretches of track

[devinmatte]

Some sets of track on the MBTA were designed for 50mph or higher, yet the MBTA maxes out at 40mph. We should look to call out what those stretches are.

Because we only have data back to 2016 for rapid transit, we may need to source this data from documents, but, it would be really cool to call out stretches where improvements are possible to improve people's lives

One document for example: https://bc.mbta.com/uploadedfiles/Business_Center/Bidding_and_Solicitations/Request%20for%20Proposals%20No.%20CAP%2027-10%20(Technical%20Provisions).pdf
Outlines many parts of the Red and Orange line. Would be great to get help parsing out the stretches of track and their max speed on that stretch

Probably relies on #803 first being finished to actually add to the dashboard

[rudiejd]

Looking at the PDF, I think it might be easier to manually input this data for now instead of trying to get OCR or something else to parse it since sections are rotated in a bunch of directions, and most of the diagrams are hand-written 😅

My proposal is that we provide a manually created JSON of the max attainable speed for all the station pairs we know right now. I'm also not certain which speed is the real max speed of the train - would that be the max attainable signal speed?

[nathan-weinberg]

Agree with @rudiejd on manual JSON for data - we do something like this for the NTT: https://github.com/transitmatters/new-train-tracker/blob/main/static/static_data.json