If You Notice Blue Reflectors on the Road, Here’s What They’re Telling You

Odds are, if you’ve driven anywhere in the United States, you’ve probably noticed small, raised blue reflectors on the ground and wondered what they are. You’re not alone, but most people have no idea what they mean or if they actually serve any real purpose.

Well, they’re not random… and they actually play an important role in public safety. Learn what blue reflectors on the ground mean, where drivers are most likely to see them, and why they matter for homeowners and anyone working around a property.

What Blue Reflectors On The Ground Mean

Blue reflectors on the ground are most commonly called “fire hydrant markers” or “blue road reflectors”, and in technical terms, they’re a type of “raised pavement marker”, typically shortened to RPM.

They’re used to mark underground water systems as they identify nearby fire hydrants to emergency crews in areas where they might not be easily seen from the road.

The color coding follows a widely recognized standard. According to guidance from the American Public Works Association, blue indicates potable water systems, which include, but are not limited to, water mains, service lines, and fire hydrants.

Fire hydrants can blend into their surroundings more than you might expect. The blue reflectors are installed by local municipalities when needed by emergency crews. Those reasons could be due to weather, parked cars, landscaping, or some other similar factor that limits visibility.

When it comes to responding to an emergency, firefighters rely on them to find hydrants without wasting time searching block by block as every second counts.

Where Drivers Typically See Blue Road Reflectors

While blue reflectors can be found in just about any area of the country where fire hydrants are present, there are some areas where they are more common.

They follow a standard, but are not installed in every city. In fact, some municipalities rely on visible hydrants alone, while others opt for alternative markers or signage to alert fire crews to available water sources.

Weather might be the most common influence as areas that deal with heavy snowfall or vegetation tend to use reflectors more frequently. That’s because hydrants can disappear from view for long periods in those conditions.

Blue reflectors appear most often on residential roads, more so in neighborhoods with standard curbside hydrants. They also show up in areas where landscaping or elevation changes make hydrants harder to spot, like a large hill, curved road, or dense hedge line.

Also, not all municipalities use them at the same frequency, as their reasoning or standard for what constitutes a visually impaired area might differ. So, similarly sized cities in the same county, state, or region that use blue reflectors might have widely different numbers of them.

Blue reflectors are usually placed in the center of the lane or slightly offset and aligned with the hydrant’s position. That’s the case even if the hydrant sits several feet away from the curb.

What Homeowners Should Know About Blue Reflectors

Knowing about blue reflectors isn’t just for the benefit of first first responders. Homeowners are also better off understanding what these markers indicate, especially when making changes to a yard or driveway.

Because a blue reflector often signals a nearby hydrant or water line connection, that’s an extra reminder that any digging project should start with proper utility checks. Utilize the Call Before You Dig service to locate underground lines before any digging to reduce the risk of damaging essential infrastructure, which could put yourself or others in danger and lead to a very expensive mistake.

The blue reflectors also serve as a reminder to keep the area around hydrants clear. Even if the reflectors help fire crews identify where a hydrant is located, physical access still matters. So keep the area around a hydrant trimmed and unobstructed.

Sources

• American Public Works Association, “Uniform Color Code for Marking Underground Utility Lines”
• Call Before You Dig, “811 Process and Utility Safety Information”

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The post If You Notice Blue Reflectors on the Road, Here’s What They’re Telling You appeared first on Family Handyman.

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