People have been taken aback by the actual meaning of H signs on lampposts.
The bright yellow signs are a common feature on roads across the UK. A fire and rescue service have taken to TikTok to highlight the important reason why they are there - as Birmingham Live reports.
The service posted a short clip alongside the caption: "POV: You’ve walked past these small yellow signs your whole life. But it was today you realised, finally, after all these years, they are there to tell firefighters where the hydrants are."
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The photo in the video tells firefighters that there's a 100mm water main 10 metres away. People flooded the comments and were taken aback by the explanation.
One user said: "I never knew. Everyday is a school day thank you."
Another added: "Well I learnt something new today thank you!"
A third commented: "I used to think it was H for helicopter landing."
A fourth posted : "I thought it was a helicopter landing pad"
Another messaged: "I thought it was H for helicopters".
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