ALL UK drivers will be familiar with the little lights on the roads that guide us as we drive.
But did you know that not only do they guide us, but the different colors also have different meanings? Read on to find out more.
There are five distinct colors that are used to convey different messages to road users on their journey.
These five colors are: red, green, blue, white and amber.
The colors of the reflective nubs serve a real purpose – and can really help you with poor visibility on unlit routes or in dense fog.
It has been around since the 1930s and the details of how it works are set out in Rule 132 of the Highway Code.
Drivers see white light most often, as they are used to mark lanes on freeways or highways.
On a regular three lane highway you will see two rows of them.
Amber cat eyes appear across the street to mark the median – and to stop you from thoughtlessly changing lanes to the right.
Red traffic lights, on the other hand, indicate the left edge of the road – before you hit the crash barriers or drift onto the hard shoulder.
Green indicates that an intersection is either entering or exiting a freeway, while blue is used for emergency services.
In addition to the visual cue the lights provide drivers, the raised lugs also help provide an audible and sensory reminder to the driver whenever they veer off their lane.
Alongside them, rumble strips are used to do the same.
Neil Greig, Policy and Research Director at IAM RoadSmart, said: “Reflective road lugs can be a lifesaver in foggy conditions and limited visibility as they can provide you with important additional information that you may need in inclement weather. Unfortunately, these are the most common studs that we see the yellow ones sprinkled all over the place along the many construction sites on our autobahns and federal highways.
“You’re always changing, so it’s important to stay alert and make sure you’re following the right track.”