Archive for April 23rd, 2016
Just because I hadn’t done so for quite a while, I rode Grand Avenue from Beechwood north to the rail trail. The rotted asphalt at the Westbound Arterial (a.k.a. Maple St, at that point) intersection makes it easy to spot the quadrupole sensor loop:
After half a minute, with no traffic pulling up behind me, I eased the bike over the central wire:
Which is exactly as awkward as it seems:
Much to my surprise, the sensor tripped:
That’s about 50 s from the time I rolled over the first of the two sensor loops, which is fast enough for me. It’s unusual to find a sensor loop that detects a bike, though.
A bit over 6 s seconds later, I’ve cleared the intersection:
The rear camera shows that the light remains green:
And it stays green:
About 11 s after turning green, a car approaches the sensor loop:
I think that reset the signal timing, so that light remained green for nearly 23 s:
It turned red after 26 s:
As nearly as I can tell, the minimum green time for this intersection is 12 s.
So life is good: the sensor loop detects a bicycle and the signal remains green for long enough to a bike to clear the intersection. If only all intersections worked that way!
Compare that with the minimum 7 s for the Burnett Blvd intersection and you (well, I) wonder why crossing six lanes requires 5 s less than crossing three lanes. Perhaps different standards apply to this single-direction cross-traffic flow that make it much more difficult than Burnett’s bidirectional cross traffic?