Display trail importance hierarchy

[quincylvania]

Long, important trails such as the Appalachian Trail form the arteries of the trail network. We should prioritize and emphasize these at low zooms to help orient people. We could consider dropping low-importance trails from low zoom levels to try and reduce tile size and visual clutter.

In OSM, trail hierarchy is often given in the network tag on route relations, such as network=iwn/nwn/rwn/lwn for walking and hiking trails. However, route relation data on ways is not currently consumable by planetiler.

[pyrog]

You could also hide path and track with informal=yes at low zoom levels according the Trail Access Project.

[quincylvania]

You could also hide path and track with informal=yes at low zoom levels

Maybe… we already render informal=yes as dotted lines, and at the moment we hide no access trails by default.