But the regulations in Germany are largely federal, no?
They might be (no idea), but if they are there's a significant amount of leeway allowed and visible between municipal roads in Bavaria and Brandenburg (richer vs. poorer states...)
Edit: no, at least part of them is state specific, e.g. Saxony road administration law: https://www.revosax.sachsen.de/vorschrift/4785-Saechsisches-...
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They might be (no idea), but if they are there's a significant amount of leeway allowed and visible between municipal roads in Bavaria and Brandenburg (richer vs. poorer states...)
Edit: no, at least part of them is state specific, e.g. Saxony road administration law: https://www.revosax.sachsen.de/vorschrift/4785-Saechsisches-...