As for why Korea’s BRT looks like this, there are buses that use the BRT all the way to the end, but there are no fences outside because they merge at a different area. So, the local government installed the fence only in the middle, so that you can join at the blue line
Please, because each country’s road standards are different, the road standards should be changed so that they can be mapped to each country’s standards. It’s hard to change rules for long-term data, but if we come here to discuss it, it’s because there was no response from the Korean OSM forum.