It would not solve much because it’s never going to be enforced by traffic police. There are several sections in Bellevue and in certain parts of Seattle where the lane is already dedicated 100% bus only but that doesn’t stop people from blocking the lane traveling in it and just otherwise making the lane worthless.

I think my absolute favorite is on Aurora where people will start accelerating to get up in front of me, only to cut me off so that they can pull into a parking lot. It’s not like they didn’t know that the bus was just traveling forward and wasn’t going to stop or turn into a parking lot, but they felt the need to accelerate and pass the bus so that they could get in front of it and then practically come to a stop to make a turn