Please help interpret the UK road tagging convention in this case.
The A6 and other roads through Kendal such as the A684 are tagged as highway=trunk which seems both inappropriate and inconsistent with other stretches of the same roads. South of Kendal, the A6 is mostly tagged as highway=primary. Same with the A684 after it crosses the M6.
Between towns, these are generally a single carriageway NSL road. In town, these are single lane, mostly one-way 20mph streets - but they do still have yellow-on-green signage. Compare with other roads around Kendal, such as the A591, which unambiguously meet the wiki criteria for highway=trunk.
I’m not an experienced mapper so I’m asking for advice here instead of just going in and changing things.
If they have green signs they should be highway=trunk except in case of clear insanity (e.g. Oxford High Street is nominally an A road but it’s actually closed to cars for most of the day). 20mph limits or road widths in built-up areas are not grounds to subjectively reclassify it.
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(slightly offtopic, but) even if it’s a trunk road, please do map other infrastructure such as sidewalks and any associated cycleways so that routers get more of a clue what sort of road it is.
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