Traffic light

Traffic light
2b3o2$o5bo$o5bo$o5bo2$2b3o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ LOOP 2 GPS 2 THUMBSIZE 2 ]]
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Pattern type	Constellation Oscillator
Number of cells	12
Bounding box	9 × 9
Period	2 (mod: 2)
Heat	16
Volatility	0.80 | 0.80
Kinetic symmetry	Unspecified
Discovered by	Unknown
Year of discovery	Unknown
Rules Outer-totalistic rules B3/S2 – B345678/S02345678 # of rules 212 = 4096
Glider synthesis Fewest gliders 2 Uploaded synthesis RLE trafficlight_synth.rle
Pattern files Plaintext trafficlight.cells RLE trafficlight.rle

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.

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

• Interchange
• Skewed traffic light
• Traffic circle
• Traffic jam

External links

• Traffic light at the Life Lexicon