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Whats with the countdown pedestrian signal??

I took this picture while the countdown as changing numbers and it looks like a garbled number. Made for an interesting pic. It was changing from 20 to 19 at the instant the pic was taken.

photos3_035.JPG Picnik_collage.jpg DSCN3441.JPG Gladewater_Longview_Trip_021.JPG photos_489.JPG
File information
Album name:basilicon89 / My Traffic Signal Equipment
Filesize:559 KiB
Date added:Feb 20, 2011
Dimensions:2816 x 2112 pixels
Displayed:244 times
AF Focus Position:Center
Color Mode:COLOR
Color Space:sRGB
DateTime Original:2011:02:19 20:25:18
Digital Zoom:1x
Exposure Bias:0 EV
Exposure Mode:0
Exposure Program:Program
Exposure Time:5/116 sec
Flash:Flash, Auto-Mode
Flash Setting:SLOW
Focal length:7.6 mm
Focus Mode:AF-S
ISO Selection:AUTO
ISO Setting:0
Image Adjustment:NORMAL
Light Source:Unknown: 0
Manual Focus Distance:0 m
Max Aperture:f/2.8
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Comment 1 to 8 of 8
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GullWhiz   [Feb 20, 2011 at 03:36 AM]
try this....make your exposure VERY VERY VERY VERY low if you can, and have the shutter time open a bit longer while traffic lights CHANGES light ( do it in dark room ) and you may make a cool effect that way!

RCM   [Feb 20, 2011 at 07:11 AM]
Kinda looks like the flash was on too! This pic IS interesting, but the flash made it overexposed! Laughing Try it with the flash off and see what happens! (no I'm not trying to be mean or anything!)

basilicon89   [Feb 20, 2011 at 04:30 PM]
GullWhiz-My camera has a fixed shutter speed. I did take a picture of the signals in the dark a while back.

RCM-If I shut flash off my camera blurs. I gotta get a new camera. This one is 5 years old.

dor123   [Feb 20, 2011 at 05:27 PM]
We probably will have in Israel in the future, countdowns for our traffic lights, as Hasmal Habarak company began to produces (Or import?) such countdowns.
They show the remained time of the red light and the green light in a red/green LED display.
Countdowns for pedestrian signals in Israel willn't be made, simply because they aren't necessary.
Speaking of pedestrian signals, i noted that in the US, pedestrian signals are in "walk" mode (Including both the white walk the flashing red don't walk lights periods) for way longer period then the green walking man light in Israel.
In Israel, in traffic lighted pedestrian crossing, pedestrian signals can be stay in green (Equivalent to walk) light for as short as 5-10 secs before going instantly to red standing man (Equivalent to don't walk), without an intermediate mode (That equivalent to flashing don't walk).

basilicon89   [Feb 20, 2011 at 08:17 PM]
America will never get countdown signals for vehicular traffic signals. First off, its a safety concern. People see 8 seconds left and speed up, and when people concentrate on beating the 8 seconds, they lose sight of people/other cars/obstacles and can cause an accident.

Secondly, while it might be possible to do countdowns in a PRE-TIMED controller environment, you cannot use them in an ACTUATED controller environment. The counter would skip around or have to add or remove seconds from the timer based on controller actuating demands and it would be highly inefficient.

This is why countdown during walk times is not allowed. Because if the controller is set to rest in walk, the countdown can hit 0 before the dont walk comes on. Likewise, if the detectors on the side street are triggered, regardless of how far in the countdown the walk signal is, the flashing don't walk starts at a fixed time.

So for example. Flashing dont walk starts at 15 seconds. And the Walk is counting 30, 29, 28, 27... and the detector is triggered on side street, the pedestrian signal will count 29, 28, 27, 26, 15, 14, 13, 12... etc.

The official name for "Flashing Don't Walk" is the Pedestrian Clearance Interval. The Walk display is just to let people get in the street and get about half way across, then the Clearance allows people to exit the street, and prevent new people from entering.

rjluna2   [Feb 20, 2011 at 11:29 PM]
good catch on getting countdown changing in between seconds Very Happy

lightboy1   [Feb 21, 2011 at 11:45 PM]
Is this your collection at home? If it is, it sure is sweet!!!!

basilicon89   [Feb 22, 2011 at 12:22 AM]
rjluna-Thanks. Wasn't expecting it, but it made for a neat shot.

lightboy- Yes it is. It's in my basement. Thanks

Comment 1 to 8 of 8
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