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Roller Derby History - The Rules
| National Roller Derby | National Skating Derby | International Roller Skating League | International Skating Conference | |
|---|---|---|---|---|
| Periods | 15-minute | 12-minute | 10-minute | 10-minute |
| Jams | 2-minutes | 60 seconds | 60 seconds | 60 seconds |
| Special | Straight Jamming Time | |||
| Helmets: | No | Jammers Only | Pivot, Blockers, Jammers | Pivot, Jammers |
| Points: | 1 Point - Passing 1 or 2 2 Points -Passing 3 or 4 s 5 Points - Passing all 5 |
1 Point for each skater passed | 1 Point for each skater passed | 1 Point for each skater passed |
| Penalties: | ||||
| Minor Penalty | 2 Minutes | 1 Minute | 1 Jam | |
| Other Penalty | 3 Minute | N/A | N/A | |
| Major Penalty | 5 Minutes | 2 Minutes | N/A | |
| Overtime | Sudden Death - No Ties | Maximum two Five-Minute Periods - Ties Allowed | Sudden Death -No Ties | Five-Minute Periods |