Control Line Language for the GCR
#25674 from GCR Committee · Recommended to the Board · Minutes (2019-01 Fastrack)
To be effective 1/1/2019:
Definition of Control Line:
CONTROL LINE (GCR 8.2.) A car crosses a control line when any portion of the car first
intercepts the vertical plane of the control line, as observed by the officials assigned to record
the passage, who may be aided by suitable automatic or semi-automatic equipment.
Add to GCR 6.10.1. and change reference from Starting Line to Start/Finish Lines
6.10.1. Starting Line for Timing and Scoring
Unless otherwise defined in the Supplemental Regulations, the start/finish line is the control
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line where timing begins/ends when crossed by a car. Per 8.2, A car crosses a control line
when any portion of the car first intercepts the vertical plane of the control line, as observed by
the officials assigned to record the passage, who may be aided by suitable automatic or semi-
automatic equipment.