The Rules of Flat Track Roller Derby

1.9 - Displaying Game Information

1.9.1 - Each game will have separate penalty clocks, jam clocks, and period clocks.

1.9.2 - Official Period Clock

1.9.2.1 - The Official Period Clock starts on the jam-starting whistle of the first jam.

1.9.2.2 - The Official Period Clock does not stop between jams unless a timeout is called. The period clock stops during a timeout.

1.9.2.3 - Officials must stop the Official Period Clock between jams when time exceeds 30 seconds. This will be considered an Official Timeout.

1.9.2.4 - The Official Period Clock must be highly visible to Referees, teams, and audience members.

1.9.2.5 - In the event of a malfunction or discrepancy, the Official Period Clock may be updated during a timeout in between jams, based on a backup clock.

1.9.3 - Official Jam Clock

1.9.3.1 - The Official Jam Clock starts on the jam-starting whistle.

1.9.3.2 - The Official Jam Clock stops at the end of each jam (on the fourth jam-ending whistle).

1.9.3.3 - The Official Jam Clock must be highly visible to Referees, teams, and audience members.

1.9.4 - Penalty Clocks

1.9.4.1 - All penalty clocks stop between jams (see Section 6.2.3 for procedure).

1.9.4.2 - Penalty clocks are not required to be visible to Referees, teams, or audience members. While in the Penalty Box, Skaters may request knowledge of how much penalty time they have remaining.

1.9.5 - Score

1.9.5.1 - The Official Score must be highly visible to Officials, Skaters, and audience members.

Real. Strong. Athletic. Revolutionary.