A highway robber is any mechanism that can retrieve a signal from a spaceship lane while allowing spaceships on nearby lanes (even those a single lane away) to pass by unaffected. In practice the spaceship is generally a glider. The spaceship is removed from the lane in question, an output signal is generated elsewhere, and the highway robber returns to its original state. A competent highway robber does not affect spaceships even on the lane adjacent to the affected spaceship stream, except perhaps during the highway robber's recovery period.
A stable highway robber with repeat time 878 was assembled by Chris Cain in 2016, with an update by Entity Valkyrie 2 in January 2019 to simplify the extraction of the output signal. A simpler highway robber with improved clearance and repeat time 876 was constructed by Louis-François Handfield in May 2020.
|A stable highway robber with|
repeat time of 876 ticks, allowing
gliders to pass by on the same lane
47+ ticks after the activating glider.
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RLE: here Plaintext: here
- Dave Greene (January 22, 2007). "Stable pseudo-Heisenburp device and other P1 wiring projects". Retrieved on December 2, 2018.
- Chris Cain (March 28, 2015). "Re: The Hunting of the New Herschel Conduits". Retrieved on December 2, 2018.
- Entity Valkyrie 2 (January 10, 2019). "RLE:Highwayrobber".
- Louis-François Handfield (May 25, 2020). "Re: Highway robber challenge". Retrieved on May 25, 2020.