Why do WARNING road signs avoid using text?
By oliverjohnbradley · September 9, 2026 · Curated by George's Blog
Why do WARNING road signs avoid using text?
Less cognitive load.
Warning signs favour symbols because drivers need to understand them in a split second, often while moving quickly and managing traffic, weather and other hazards. The human brain processes visual symbols significantly faster than text under pressure.
Now watch how shoppers browse on a smartphone.
Frenetically fast vertical scrolling looking through search results (or favorites).
Tobii Eye-tracking of online shopping shows fixations follow images down the page as people scroll, avoiding the cognitive load of reading product titles.
Shoppers do not read product titles. They glance down the visual image grid.
300 to 400 milliseconds per glance.
When a brand uses a standard packshot cluttered with small printed text, it's VISUAL FRICTION because it forces someone to slow down and read the product title.
That visual friction makes your hero that's not a real hero a "scroll-past" candidate.
"Ignore me...I didn't bother to make it easy for you".
This is exactly why Mobile-Ready, glance-readable hero images matter.
Designing mobile hero images to GS1open industry standards strips away pack clutter so the shopper instantly works out the 4Ws:
• Brand
• Format
• Variant
• Size (Count)
Drivers moving at speed cannot read paragraphs on road signs.
Shoppers scrolling a mobile feed really do not to read titles to understand what you are selling. So most times they don't and those with real heroes win the glance.