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GE Pedestrian Module
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Here's a GE LED 16" traffic signal module with the countdown module that's common in most new installations in the US. Unlike the ped modules in Canada these ones have a more incandescent look instead of the dotted outline look used in Canada. I personally prefer the incandescent look though.
Here's it showing the walk signal:
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Back in the pre-countdown days the flashing hand was a clearance interval. If you were in the street, continue across but pedestrians just approaching the intersection were to remain on the curb.
Now the flashing hand is more of a judgement call because you have the counter to decide on whether or not you should walk, run, fly or stay put for the next light. Only the hand needs the countdown, the walks dont because no matter how long the walk is, you have right of way. And in some cases the walk will dwell
But it's enforced on the big roads.
I've noticed here at crosswalks with crossing signals (not at an intersection), people don't press the button for a red light/walk light. Instead they wait for someone to let them cross or they just cross in front of cars thinking they own the friggin world. i always press the button because i want to see the 12-12-8 signals turn red lol, as I rarely see that happen.
Unfortunately I don't think they ship though.