The in basket: A reader who asks to be known as Invisible in Poulsbo, writes, “There is a problem that I face daily on our local roads: traffic lights
won’t change for me! I drive a 4WD Ford pickup which has high ground
clearance and when I approach a traffic signal it’s like I am wrapped in an
invisibility cloak.
“Is this a common complaint or just something unique
to me?”


The in basket: A reader who asks to be known as Invisible in Poulsbo, writes, “There is a problem that I face daily on our local roads: traffic lights
won’t change for me! I drive a 4WD Ford pickup which has high ground
clearance and when I approach a traffic signal it’s like I am wrapped in an
invisibility cloak.
“I am very careful to stop precisely at the stop bar, and
when I can see the induction loop I am careful to center myself over it, he said.
Overhead sensors on the lights in Silverdale has fixed the problem there,
but elsewhere, especially Highway 305 at Olhava and the Highway 303 corridor are forcing
me to sneak through red.
“Is this a common complaint or just something unique
to me?”
The out basket: It’s first time I’ve heard it from anyone by a motorcyclist.
I asked Larry Hugel of the Kitsap County signal shop and he said, “It is possible for any vehicle high off the ground to not be detected by an inductive loop detector. The variables are numerous. We primarily
use 6X6 round loops in the county spaced six feet apart. Our detection is very sensitive to most types of vehicles, including large trucks and motorcycles. The effective height of a loop is
approximately two-thirds the length of the shortest leg of the loop, or about
4 feet. So it is possible that a very high truck could miss detection.”
Maybe Invisible can try tying a magnet to some lower part of his chassis to trigger the lights, like the motorcyclist I wrote about a couple of weeks ago.

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