p50 traffic jam

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p50 traffic jam
x = 48, y = 16, rule = B3/S23 2o44b2o$o2b3o36b3o2bo$b2o30b3o9b2o$6bo18bo15bo$6bo3bo12b2ob2o3bo5bo3bo $b2o5b2ob2o12bo5bo5bo7b2o$o2b3o4bo20bo5bo4b3o2bo$2o44b2o$33b3o2$6bo2bo 28bo2bo$5bob2obo26bob2obo$6bo2bo28bo2bo$6bo2bo28bo2bo$5bob2obo26bob2ob o$6bo2bo28bo2bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ GPS 5 ZOOM 10 LOOP 50 ]]
Pattern type Oscillator
Number of cells 92
Bounding box 48×18
Period 50
Mod 25
Heat 100.9
Volatility 0.91
Strict volatility 0.63
Discovered by Noam Elkies
Year of discovery 1994

P50 traffic jam is a period-50 oscillator discovered by Noam Elkies on October 16, 1994.[1] It works by hassling the 25-generation traffic jam reaction with two copies of fumarole and two copies of octagon 2. In terms of its 92 cells, it was the smallest known period 50 oscillator until May 18, 2022, when 46P10 on 30P25 was found.[2] The version shown is the cis version, and by reflecting the right side it is possible to get a trans version with also 92 cells.

The traffic jam reaction gives off strong dot and obo! sparks. Nothing has been found that requires the p50 traffic jam, but oscillators have been found using the same reaction at other periods, as described in p44 traffic light hassler. The period-50 glider gun used the p50 traffic jam in a different way before the much smaller 55P10 was discovered.

See also


  1. Dean Hickerson's oscillator stamp collection. Retrieved on June 25, 2009.
  2. Jason Summers' all-osc pattern collection. Retrieved on June 25, 2009.

External links

  • 92P50.1 at Heinrich Koenig's Game of Life Object Catalogs