ORS 814.400 helps to indicate what the principle embodied in Oregon law with respect to use of bikes on the road, probably could be said to be.
Originally Posted by John Forester
In Oregon, people riding bikes are acknowledged by law to have the right to use the roadway. (In the below excerpt of the law, the bold face and underlining is my addition.):
"(1) Every person riding a bicycle upon a public way is subject to the provisions applicable to and has the same rights and duties as the driver of any other vehicle concerning operating on highways, vehicle equipment and abandoned vehicles, except: ..." ORS 814.400 Application of vehicle laws to bicycles http://www.oregonlaws.org/ors/814.400
"...Yes, he correctly quotes the law with his conclusion that cyclists are allowed to use the roads provided that they use bike lanes or side-paths wherever these exist. ..." John Forester
Not 'allowed', but "...effectively acknowledged by law, the right to ride the main lanes of virtually every street, road, and highway in the state, regardless of whether a bike lane, MUP, cycle track or other bike infrastructure exists adjacent to the road being ridden. ..."
Interested readers may study the entirety of the text ORS 814.420 (it's brief, easily readable...takes some careful thinking to fully understand.) to notice for themselves, the conditions detailed in the law, not included in John's remark above. People riding bikes in Oregon are not in violation of the 'Failure to use a bike lane or path' law, unless the bike lane or path meets all of those conditions. The law doesn't rescind the right to use the road people biking in Oregon are acknowledged by law to have, in exchange for a state of permission to use the road. In ORS 814.400, ORS 814.420, or ORS 814.430, all of which are bike specific road use laws, there is no mention of 'normal'. http://www.oregonlaws.org/ors/814.420
" (snip) Consider what happens. The bike box provides an additional temptation for cyclists to overtake on the right-hand side of right-turning traffic, just so that they can get into the bike box. The obvious then happens: there are more right-hook car-bike collisions near those bike boxes.(snip) " John Forester #299
I don't think the city has come up with anything to suggest bike boxes are leading people on bikes to do this sort of thing. As I've said before, the boxes are just something the city has been experimenting with at certain intersections. They're not that great to use, because, for example, it's awkward to actually get into a box ahead of a motor vehicle that's already at an intersection waiting for a light to change. People riding bikes may not be using bike boxes much at all, for any reason. For bikes intent on through travel at an intersection, it's easier and better to either remain a car length back of the intersection, positioned in the bike lane if one is present and hazard free, or on approach to the intersection from a further distance back, transition from the bike lane to the main travel lane for travel through the intersection, a maneuver people biking in Oregon are effectively acknowledged by law to have the right to make.
Downtown, where I believe the boxes have primarily been located, are various intersections that tend to be relatively more problematic for motor vehicle-bike close calls and collisions. Personally, I believe it's greater numbers of people biking, and more of them not well skilled in riding in traffic, as well as the ever present hazard of various erratic people driving motor vehicles, that's resulted in an increase of collisions at certain intersections where bike boxes have been installed in Portland.