Custom Fiber Optic & Communcation Line Triangular Utility Markers
Designed to alert workers to buried fiber optic or communication lines, this triangular marker delivers 360° visibility and rugged performance in all weather conditions. Add your own custom warning text, company name, and emergency contact information.
Utility Triangular Marker Preview
The image in the builder is for preview purposes only, your design will be printed on a utility Triangular marker as shown below. Click on image below to see full spec details.
Other Utility Triangular Marker Variants:
Clicking on any of the images below takes you to that respective custom builder.
Need to design a custom sign but don’t see a template you like? Email us directly at [email protected].
Prices are for your custom sign.
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Product Information
Triangular Utility Markers
Offered in 66" or 72" sizes
Material: High-Density Polyethylene (HDPE) Post with an Outdoor Durable Vinyl Label
Three-sided, high-visibility utility markers designed for long-term use in utility corridors, open fields, and critical infrastructure zones. Each marker includes a weather-resistant vinyl label that is overlaminated to protect against UV rays, moisture, and abrasion—ensuring your warning message stays clear and legible for years.
Available Types:
- Electric Utility (Red) – Indicates locations of underground electrical power
- Fiber & Communication (Orange) – Shows communication cable paths or broadband corridors.
- Gas, Oil, & Steam (Yellow) – Marks pipeline or fuel line areas near traffic zones.
- Water Line (Blue) – Indicates potable water mains.
- Reclaimed Water (Purple) – Indicates reclaimed water, or recycled water, and irrigation systems.
- Sewer/Drainage (Green) – Used to mark sanitary and storm sewer systems.
Customizable with: your warning text, company logo, and contact information.
What are Utility Markers?
Utility markers are permanent posts or signs used to indicate the path of underground utility lines. Unlike temporary paint or flags, these durable markers remain visible throughout the project and long after, helping crews avoid dangerous or costly strikes. Each marker is color-coded according to the APWA standard to indicate the type of buried utility.
What Is 811?
811 is the national “Call Before You Dig” number. Before starting any digging project, calling 811 helps utility companies locate and mark underground lines to prevent accidents, service outages, and costly repairs.
Why call 811? Because hitting buried utilities can have serious consequences. It helps prevent:- Damage to underground facilities – Avoid breaking gas pipelines, water mains, communication cables, etc.
- Service outages – Prevent knocking out power or communications for you and your neighbors.
- Costly repairs or legal liabilities – A ruptured line can lead to expensive fixes, fines, and lawsuits.
- Serious injuries or fatalities – Striking a gas or electric line risks explosions or electrocution, endangering lives.
APWA Utility Color Code
Uniform Color Code (APWA Standard)
To avoid confusion, the American Public Works Association (APWA) developed a Uniform Color Code used nationwide for utility markings. This standardized color system means that each color corresponds to a specific type of utility. Whether markings are paint, flags, or permanent posts, the colors stay consistent so everyone knows what buried lines are present.
Source: APWA
