Here is the article in the regular newsletter to engineers in Oregon
Page 6
I concur that the board is going a bit overboard,
when I read the newsletter, it looked to me like he was HIRED to tune traffic lights
and lacked qualifications to do so, hence I was surprised by the low fine.
Now it looks like the the guy was out there with a stop watch and a tape measure looking to get out of a traffic ticket, and the calculation is taught in any physics class.
Of course the real situation it is probably someplace between the two extremes.
In the past few decades the intersections in the Beaverton area have grown from the 2 lane country paths they were when I was learning to drive. And I can see where yellow light duration's may not have changed to accommodate a larger intersections, the book says the yellow light is X seconds long so they make it that way. Now the City has a revenue source with red light cameras. There is a real lottery revenue stream, if you are the unlucky one you get a ticket in the mail. (The State has the monopoly on the normal lottery.)
But I also see car after car going through even though the light is red, especially on a left turn signal.
I too also recall the domestic engineer case by the Oregon Engineering Board several decades ago.
Got all the above typed up then read the Motherboard article
from the Motherboard article, it looks like City (in the full color chart) is not following ORS 811.260(4) a state law.
but then you look up 811.260(4) it has no such calcs or chart
And that chart was drawn up by Jarlstrom, and that chart looks like a very detailed engineering calculation and now that chart is published.
Humff
Again the real situation is between
Hydrae