Traffic light

The traffic light is a common formation of four blinkers and is the most common member of the familiar fours, also being the only one made from oscillators. A common predecessor is the T-tetromino. Although it behaves the same in some important non-standard rules such as HighLife as it does in standard Life, it does not appear nearly as frequently in many of those rules due to its common predecessors being unstable.[1]

Traffic light
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Pattern type Constellation
Number of cells 12
Bounding box 9×9
Period 2
Mod 2
Heat 16
Volatility 0.80
Strict volatility 0.80
Discovered by JHC group
Year of discovery 1970

Drawing a single cell in the middle of the traffic light while it is in its + phase will eat the whole traffic light leaving nothing behind.

See also


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