The DOT Placarding System requires a vehicle carrying nonflammable compressed gas to display a placard colored:

The DOT Placarding System requires a vehicle carrying nonflammable compressed gas to display a placard colored:

• A. Blue
• B. Yellow
• C. Green
• D. Red

Answer: (C)

Color coding in the DOT placarding system helps responders identify hazard type at a glance. For gases, the background color indicates the danger category, and nonflammable compressed gases use a green placard. This quick cue tells you the gas isn’t flammable, even though it remains hazardous because it’s stored under pressure and can cause problems like asphyxiation or injury from a sudden release. The green color distinguishes it from other gas hazards that use different colors, guiding the appropriate safety and emergency response actions.

Color coding in the DOT placarding system helps responders identify hazard type at a glance. For gases, the background color indicates the danger category, and nonflammable compressed gases use a green placard. This quick cue tells you the gas isn’t flammable, even though it remains hazardous because it’s stored under pressure and can cause problems like asphyxiation or injury from a sudden release. The green color distinguishes it from other gas hazards that use different colors, guiding the appropriate safety and emergency response actions.