How are false starts treated in combined events?

Under World Athletics TR 39.8.3, in the track events of a combined events competition (for example the U16 pentathlon, heptathlon or decathlon):

• One false start per race is allowed without disqualification.
• After that first false start, the athlete responsible is shown a yellow and black card, and every other athlete in the race is also shown the yellow and black card to warn them.
• Anyone responsible for a further false start in that race is disqualified by the starter and shown the red and black card.

Only the starter can decide these warnings and disqualifications.