RecessTraffic rulesUnited Kingdom

I have a small issue with the "manditory lane for buses" sign.... that isn't the sign used, the sign used that I know of shows a bus, the sign here shows SPECIFICALLY a Tram, which is a different vehicle.(the bus used looks like the bus on the bus and tram sign.)

The polish sign "Curve of the main road" is actually a complimentary sign showing the "actual course of priority road" and there are several thousand variations of it as this is often "crossroad specific"

please answer me, where can I find the guidelines or policies where traffic signs should be placed?

https://routetogermany.com/drivingingermany/road-signs-germany

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