# Yellow Flag > Yellow Flag — motorsport glossary term on TRAACKS. ## Definition A warning flag indicating danger ahead, such as a crash or debris. Single yellow means slow down and no overtaking. Double yellow means be prepared to stop. Drivers must reduce speed in yellow flag zones and cannot set competitive lap times. - **Category**: Regulations - **TRAACKS page**: [https://traacks.club/glossary/yellow-flag](https://traacks.club/glossary/yellow-flag) ## Related Terms - [Red Flag](https://traacks.club/glossary/red-flag) - [Safety Car](https://traacks.club/glossary/safety-car) - [Marshal (Flag Marshal)](https://traacks.club/glossary/marshal) ## Links - [Full glossary](https://traacks.club/glossary) - [TRAACKS llms.txt](https://traacks.club/llms.txt)