Sign Blindness – the hidden safety risk

If road accidents are still happening in areas where you have signage in place, you may need to update your sign infrastructure

It is a common theme when speaking to our customers that they require a new solution that helps to capture drivers’ attention in settings where they already have existing signage in place. Often, standard plate signage may have been installed which has an initial impact, but drivers soon begin to ignore the information or warning being displayed. This is often referred to as ‘sign blindness’ and can clearly be a safety concern for local authorities.

What is sign blindness?

Sign blindness, also known as “sign fatigue” or “visual saturation,” occurs when people become so accustomed to seeing the same signs that they effectively stop noticing them. This psychological phenomenon is particularly concerning in industrial and logistics environments where safety signage is crucial for preventing accidents.

The science behind sign blindness

Our brains are wired to filter out constant, unchanging information to prevent sensory overload. This filtering mechanism, known as “habituation,” helps us focus on new or changing information in our environment. While this is generally helpful for daily functioning, it becomes problematic when the “filtered” information is crucial for safety.

Common Triggers of Sign Blindness:

• Repetitive exposure to the same signs

• Static information that never changes

• Poor placement of signs

• Overcrowded signage areas

• Lack of visual hierarchy

• Constant exposure during routine tasks

Street furniture: too much similarity in stimuli

Studies have shown that similarity can influence the perception of a present stimulus. Therefore, one reason why sign blindness may arise is the number of signs on the road. Too much street furniture can overload drivers with too much similarity in stimuli and so the signs are not individually perceived.

By installing signs that can warn drivers of more than one hazard at the appropriate time, it is possible to reduce street clutter and ensure the relevant message is displayed and perceived by the motorist. Read about how Dudley Council used a vehicle activated sign solution with a dual hazard display in order to help with their road safety.

An LED upgrade

Often existing road safety measures may not be illuminated solutions, and so one simple option is to upgrade your signage to LED.  LED signage is energy efficient and a vehicle activated sign ensures it only illuminates when an oncoming vehicle is detected. The evolution of digital signage technology is helping combat sign blindness through:

• Artificial Intelligence integration

• Context-aware messaging

• Real-time hazard response

• Personalised warnings

The smiley SID – science behind the speed indicator device

There is some evidence to suggest that stimuli that feature a reward are noticed more. This in its very simplest form can be a smiley/sad face or a ‘Thank You’/’Slow Down’ safety message displayed on a speed indication device.  If motorists know the consequence of their behaviour is to generate a visual consequence, they are more likely to continue perceiving the sign and the associated speed limit or hazard warning. This has proven to be an effective solution against speeding on an agricultural site in North Yorkshire, click here to read more.

Conclusion

Sign blindness is causing hundreds of traffic incidents that can be avoided so understanding and addressing sign blindness is crucial for improving safety. By implementing dynamic solutions and following best practices, we can ensure safety, speed and hazard warning messages continue to be effective. By reducing street clutter, improving visibility with LEDs and adding positive reinforcement to signage, we can help to reduce sign blindness amongst motorists.

If you think motorists in your area are struggling with sign blindness, speak to a member of the team for a solution to improve the safety of your roads.