Color coding for underground utilities commonly marks which utility with yellow?

Color coding for underground utilities commonly marks which utility with yellow?

• A. Potable Water
• B. Electric
• C. Telephone
• D. Gas

Answer: (D)

Color-coding underground utilities is all about quickly signaling what type of service lies beneath to keep digging safe. Yellow marks indicate gas lines (natural gas, propane, etc.), so they are treated as a warning for flammable gas and danger if disturbed. This helps prevent leaks, fires, or explosions. For reference, blue typically marks potable water, red marks electric power, and orange marks telecommunications cables. The aim is to identify and protect gas lines specifically when planning or performing any excavation.

Color-coding underground utilities is all about quickly signaling what type of service lies beneath to keep digging safe. Yellow marks indicate gas lines (natural gas, propane, etc.), so they are treated as a warning for flammable gas and danger if disturbed. This helps prevent leaks, fires, or explosions. For reference, blue typically marks potable water, red marks electric power, and orange marks telecommunications cables. The aim is to identify and protect gas lines specifically when planning or performing any excavation.