Driving on a dark and rainy night can be a daunting experience. Your vision is limited, and you’re at a higher-than-usual risk of an accident. This is where reflective road studs come into play.
These little studs, also known as cat’s eye, are an essential part of road safety that can be the difference between safety and disaster.
In this blog post, we will explore what reflective road studs are, how they work, and why they are so important for road safety.
What are reflective road studs?
Reflective road studs are small, reflective markers placed on roads, particularly on motorways and slip roads, to guide drivers and improve visibility.
They’re particularly useful in low-light conditions, e.g. at night or in bad weather.
The studs are usually made of reflective material, such as glass beads or retroreflective film and come in a variety of colours, including white, yellow, red, and green, which indicate different types of road markings.
Knowing what these are and how they work is an important part of the UK Highway Code for both already-licensed drivers and those learning to drive.
Why do motorways have reflective road studs?
Reflective studs are a common sight on motorways and are designed to help drivers stay in the correct lane and improve visibility in poor weather or darkness.
Another important reason for using reflective studs on motorways is to help drivers spot upcoming changes in the road, so that they can adjust accordingly.
This is especially important in areas with a high speed limit, as drivers may not have time to react to sudden changes in the road if they don’t spot them in time.
The reflective studs help drivers to spot these changes in the road ahead and adjust their speed accordingly.
In addition to helping drivers stay in the correct lane and spot upcoming bends, reflective studs can also help to reduce the risk of accidents.
Read more: New Road Markings and Infrastructure Improvements to the A47
What does each road stud colour mean?
Each road stud colour has a specific meaning, and it’s important to know what they signify to ensure road safety.
White road studs
White road studs are primarily used to mark lanes on motorways or large dual carriageways.
Positioned directly between traffic lanes, these markers serve as visual guides to ensure drivers stay in the correct lane.
On single-carriageway roads, you will also see these placed in the centre of the road to clearly separate traffic moving in opposite directions, providing vital guidance when road markings might be faded or obscured by rain.
Amber Road Studs
These are vital for motorway driving.
They are placed along the right-hand edge of the carriageway, right next to the central reservation. They are designed to help you keep a safe distance from the barrier separating the two carriageways.
Red road studs
Red road studs serve as a critical warning system to keep motorists on the safe running surface of the road.
These are specifically placed along the left-hand edge of the carriageway, marking the boundary between the lane and the hard shoulder or grass verge.
If you see red reflections in your headlights, it is a clear signal that you are drifting toward the edge of the road, helping to prevent accidental departures from the tarmac during nighttime driving.
Green road studs
Green road studs are essential for navigating junctions, as they mark the boundary of slip roads at motorway exits and entrances.
These studs are also found marking the edges of lay-bys and bus lanes.
These green cat’s eyes show drivers exactly where the “off-ramp” begins, making it much easier to spot exit points and merge safely in low-visibility conditions.
The installation process of road studs
Reflective road stud installation requires careful planning and execution to ensure they are placed correctly and effectively.
Road stud installation takes a lot of time and effort and requires a team of skilled workers. Not just that, but several regulations and guidelines must be complied with, including the Traffic Signs Regulations and General Directions (TSRGD), to ensure driver safety.
Temporary road studs – What are they?
On occasion, you may come across temporary road studs that are used to mark changes to the road layout, such as lane closures, roadworks, or emergency situations.
These often come in two colours, and it’s important for learners and drivers to recognise them and know what they mean.
Fluorescent green and yellow road studs
Fluorescent green and yellow road studs are most commonly found in areas undergoing roadworks.
They are designed to indicate to drivers that the road’s normal path has changed, such as with a contraflow system or a temporary lane shift.
Because they are designed to stand out against the standard white markings, they provide an extra layer of awareness for road users.
Blue road studs
These are specialised studs used to mark access points for emergency services.
You’ll often see them near police observation platforms or where there are hydrants/emergency access points on the motorway.
How road studs have adapted over time
Road studs have evolved over the years to improve road safety and visibility. Traditionally, road studs were made of metal and relied on your headlights to reflect light back at you. These are known as passive studs.
Nowadays, however, road studs are more advanced.
They contain solar panels and LEDs that don’t need your headlights to work, as they are bright and powerful enough to be seen from over 800-900 metres away (compared to about 90 metres for traditional ones), which gives those on the road significantly more time to react.
A final thought
For drivers, including learner drivers, road studs are an important part of road safety. You should always be aware of their presence and what they mean.
Recognise the studs and understand their purpose, and you’ll be better equipped to navigate any motorway or dual carriageway safely and confidently.