Not withstanding bike lanes and green boxes, it is still possible to
get squashed by a truck in downtown Portland.
http://www.oregonlive.com/portland/i...ws_spotli.html
Now they are talking about putting in complicated warning lights.

Oddly enough, we got these green boxes and lanes exactly because a
girl got squashed by a turning truck in another part of down town.
None of this stuff is a guaranty that you are going to be seen by a
giant, slow moving truck with mirrors mounted six feet off the
ground. I am absolutely not placing blame, but with the speed
differences in the two vehicles (nimble bike versus lumbering semi on
narrow downtown street with short blocks between lights), I always
wonder how these truck squash incidents occur.

-- Jay Beattie.