What would be the best way to handle setting unusual defaults on a regional basis? For example, all of the City of Tulsa and State of Oregon prohibit U-turns at traffic lights. How would one tag for this, and the inverse, tagging where such a turn is allowed by a sign?
Most complicated example I can think of is one intersection I remember is at https://www.openstreetmap.org/node/4597658691 and it's immediately adjacent companion for the other carriageway just south. U-turns are banned in Oregon at traffic lights, but facing Canyon Road eastbound and westbound is a sign that says "U Turn OK, CARS ONLY". Northbound and southbound traffic cannot U-turn at the light. So there would need to be an exception for motorcars coming from the east or west to allow a U-turn and a statewide regional default to deny U-turns at lights for all modes.
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