Traffic Count Improvements

[Pete-Y-CS]

A couple of things have been highlighted by inspections that could be improved about traffic count:

• Don't filter only to 2022 (we might want to discuss with folks a different cutoff). If we do this we will want to also display the year the count happened.
• Rescale our colouring, or at least have an inspector mode which colours the dots green, amber, red, CRITICAL COLOUR, depending on whether it's 0-1000, 1000-5000, 5000-10000, or >10000 (probably misremembering the exact bands)
• Use the 'raw counts' from the bottom of the manual count point page: https://roadtraffic.dft.gov.uk/manualcountpoints/47486 to determine the max motor vehicle count for any hour. More than 1000 is a critical issue

[dabreegster]

Need to followup with more people about the bands. The route check 21 "motor vehicle volume" is based on per hour, which we don't have yet -- need to scrape or ask DfT for a bulk download. "Provision of crossings" is gated on vpd of < or > 8000, so maybe we have different controls depending on the check being done.

[dabreegster]

Ah I'm blind, https://roadtraffic.dft.gov.uk/downloads has a raw count bulk download