The first occurrence was on Lap 33. Crew chief Bootie Barker said that if it happened again, the team would have to switch to a backup channel.

Fox Sports’ Bob Pockrass reported a switch was the team’s lone option.

MORE: Live updates, results, highlights from Coca-Cola 600 

While it may come as a surprise that drivers are using public channels in high-stakes races, there’s a good reason NASCAR doesn’t use encrypted communication, per Pockrass.

The policy means the limited recourse for Wallace — the only Black driver in the Cup Series — and his team of switching to the backup channel.

Wallace ultimately crashed out of the race after being caught up in a wreck on Lap 192.