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A second gun calling them back.
Also known as: Recall gun, Sprint recall signal
The athletics signal recalling sprinters after a start judged false.
Recalls the field after a start judged false.
Contexts: Public information
An auditory signal rather than a visual one, because a sprinter in the first strides is looking down the track and cannot see a flag — the medium follows from what the athlete can perceive.
Contexts: Public information
Detected by pressure sensors in the blocks rather than by eye, so the decision is instrumental and the gun only announces it.
Contexts: Public information
A second firing of the starter's gun immediately after the first, together with a raised arm, bringing the field to a halt.