The Rules of Flat Track Roller Derby
4.4.1 - The pack may begin rolling at the jam-starting whistle from the official.
4.4.2 - Jammers may not be accelerating at the jam-starting whistle. They are, however, permitted to be moving, coasting, or braking.
©2012 Women’s Flat Track Derby Association (WFTDA). The Rules of Flat Track Roller Derby may not be reproduced or translated in whole or in part in any manner without the permission of the WFTDA.
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