2. A larger curb radius often pushes the ramps and crosswalks further down the intersecting streets to allow for the ramps to align properly (for ADA compliance). This adds a lot of extra steps and most people then cross outside the crosswalk so they aren't inconvenienced.
In this case, the traffic engineer didnt give half a shit about ADA best practices, as the ramp to cross Mass Ave is in no way shape or form aligned with the crosswalk.
https://goo.gl/maps/f8ijwL5feww
This is also obvious in the construction diagrams.
Makes you wonder how much they really care abut really designing a safe intersection.
And if you want to be the designer who gets sued because that one truck following Waze went down a street , hopped a curb and ran over a kid - well, have fun with that.
Thats not how liability works, at all. You are immune from liability if you follow previously endorsed plans. That means MUTCD, AASHTO, and NACTO. Those plans absolutely allow you to accommodate rare truck movements through a variety of techniques that do not require a massive turning radius.
And frankly, it's pretty obvious what you care about when you say this:
Setting the stop bar back means reducing the storage capacity of the turn lane.
Im sorry, I thought our primary concern was the truck turning without killing Jimmy? I guess Jimmys life is secondary to storage capacity.
So again, why are you not concerned that a blind pedestrian is being oriented diagonally into the intersection where he will get run over, thanks to the incredibly large turning radius?