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Some pedestrian signals integrate a countdown timer, showing how many seconds are remaining for the clearing phase. In the United States, San Francisco was the first major city to install countdown signals to replace older pedestrian modules, doing so on a trial basis starting in March 2001. [68]
The bottom window, previously showing the walking animation, sometimes becomes a countdown display in red, although there are many versions of xiaolüren pedestrian lights where countdowns are absent and not build in to red lights, red light timers also break more easily than green light timers, as the devices are possibly programmed to believe ...
Pedestrian countdown timers are becoming common at urban signal-controlled crossings. Where a pedestrian countdown is shown, it is normally used in conjunction with the flashing hand signal (in the US and Canada) or blackout period (UK), showing the amount of time remaining in seconds until the end of the flashing hand or blackout.
All new installations of pedestrian signals in the US must include a countdown timer, unless the countdown timer is less than seven seconds long, per the 2009 MUTCD. In New York City, however, this is not the case, as only streets that are wide enough will get countdown timers, regardless of the length of the countdown. [42]
English: A United States pedestrian crossing signal aspect displaying a 'Don't Walk' signal with a countdown timer until the pedestrian phase ends. (This aspect acts similarly to the yellow light on a traffic light.)
On fully actuated signals, or semi-actuated traffic signals, pressing the button to cross a smaller side street will cause an "instant walk signal". In most states, drivers only have to wait until the pedestrian has finished crossing the half of the crosswalk that the driver is driving on, after which the driver may proceed.
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Pedestrian traffic signal in Taiwan, featuring a "Walking green man" below a countdown display where the "Red Man" once stood. In traffic control, simple and old forms of signal controllers are what are known as electro-mechanical signal controllers.
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