Currently (2016), if there is a false start, they are signalled by firing the starting gun twice. The race is stopped and the offending athletes are immediately disqualified. Before 2003, an athlete making a false start would be allowed another start and would only be disqualified after a second false start. Between 2003 and 2009 (inclusive), if there was a single false start, then the whole field would be warned, and the original offender would be allowed a second start. If anyone made a false start on the second start, then they would be disqualified (even if they did not false start the first time).