12-18-2018, 01:09 PM
I'm not actually convinced they do increase capacity. If they provide a sufficient merging lane, yes they do, but more often than not they don't. Without a proper merge lane, drivers will typically have to stop anyway (in high traffic situations, but we're interested in capacity, so assume that's the case), but now they have to check their blind spot for a clear spot in traffic, which is more difficult for people to do safely than just dealing with a standard right hand turn. Good luck having them notice pedestrians and cyclists in that position as well.