First I should say that as long as the person in the opposite lane of the road I'm turning onto stops at their stop line, I have no trouble making the turns in my personal vehicle. To your question about busses, the right turn from 29th onto Remington has a corner radius ~5' and an effective turning radius, including the use of the southbound lane, at ~15.' Busses apparently need 21.5' or more inside turning radius, implying these intersections were designed for busses to drive over the pylons when turning. An interesting note is that at 15' radius and the minimum given side friction factor, I get 8.5mph as the design speed for that turn.