Have you ever seen a yellow sign with a large black “H” on it attached to a lamppost or wall? If so, you may have wondered what it means.

In this blog post, we’ll discuss the meaning of the “H” on lampposts and why it’s important. We’ll also provide some tips for staying safe in the event of a fire.

The “H” on lampposts stands for “hydrant.” The sign indicates the location of a fire hydrant, and the numbers below the “H” tell you the size of the water main and the distance from the sign to the hydrant.

Fire hydrants are important for firefighters to access quickly in the event of a fire. The “H” signs help firefighters find the hydrants quickly and easily, even if the hydrant cover is obscured.

The “H” signs are also used by other emergency responders, such as police officers and paramedics. These responders can use the signs to find the hydrants quickly if they need to use the water to put out a fire or to provide medical assistance.

Here are some additional things to know about “H” signs:

  • The size of the water main is measured in millimeters.
  • The distance from the sign to the hydrant is measured in meters.
  • The signs are usually yellow, but they can also be white or green.
  • The signs are usually attached to lampposts, but they can also be attached to walls or other structures.

Why you should care:

Knowing what the “H” on lampposts means can help you stay safe in the event of a fire. If you see a fire hydrant, you can use the “H” sign to find the nearest one and help firefighters put out the fire.

You can also use the “H” signs to find fire hydrants in your community. This is important if you need to use the water for a fire or for medical assistance.

Tips for staying safe in the event of a fire:

  • Know where the fire hydrants are in your community.
  • If you see a fire, call 911 immediately.
  • Stay away from the fire and let the firefighters do their job.
  • If you need to use a fire hydrant, follow the instructions on the sign.

The “H” on lampposts is an important safety feature. By understanding what it means, you can help keep yourself and your community safe in the event of a fire.