Section 7: Violations & Penalties

Any athlete who commits a false start is given a warning (Yellow Card). The first false start per race is charged to the field collectively; thereafter, any individual false start results in disqualification of that athlete.

Source: Rule 162.5, Rule 163.3, Rule 163.2, Rule 145, Rule 7.7, Rule 163.5, Rule 125, Rule 149

Send this to your friend — argument over.