English: An example of a United Kingdom Hazchem plate, displaying information for a vehicle or site containing petrol (Gasoline), UN number 1203.

"3YE" is a hazardous materials response code, that means:

• 3 - Use Foam
• Y - Use breathing apparatus (SCBA) and standard firefighter protective clothing and contain spill and that the material can be violently/explosively reactive.
• E - Public Safety Hazard, the public should be kept away from the scene and warned to stay indoors.

Note: The telephone number listed is fictitious, per Ofcom.