Not really what you're asking for, but Sacramento's "Fix 50"[0] project is a currently ongoing development project where I can offer some commentary as a citizen who has no knowledge or expertise in this field.
In total honesty, I'm challenged in seeing how there was much in the way of due safety planning performed.
In certain framings, accidents and deaths have more-than doubled during construction[1]. The extreme amount of hyperfocus one (and all the other drivers around them) has to exercise in order to cope with the super-confusing lane changes and dodging other drivers not paying attention to the partial repavement lines completely deviating from the actual lanes, and short ramps, (and much worse when driving against the sun) is mind-boggling and renders the local headlines (even if sensationalist) unsurprising.
In total honesty, I'm challenged in seeing how there was much in the way of due safety planning performed.
In certain framings, accidents and deaths have more-than doubled during construction[1]. The extreme amount of hyperfocus one (and all the other drivers around them) has to exercise in order to cope with the super-confusing lane changes and dodging other drivers not paying attention to the partial repavement lines completely deviating from the actual lanes, and short ramps, (and much worse when driving against the sun) is mind-boggling and renders the local headlines (even if sensationalist) unsurprising.
[0]: https://www.fix50.com/
[1]: https://archive.ph/8vmzu