19/10/2026
🚗 GDS KNOW YOUR ROAD SIGNS – POST 3 🚦
SIGNS GIVING ORDERS – PART 2
🔵 DO YOU KNOW WHAT THESE BLUE ROAD SIGNS ARE TELLING YOU?
Welcome to Post 3 in our ongoing Grantham Driving School series, helping learners and experienced drivers understand the road signs we encounter every day.
In our previous post, we looked at signs with red circles, which generally tell drivers what they must NOT do.
This week we're looking at blue circular signs, which usually give a positive instruction — something you MUST do.
Unlike warning signs, these are not suggestions. They give instructions that drivers are legally required to follow.
Let's look at the eight signs featured in today's graphic.
🔵 1. AHEAD ONLY ⬆️
You must continue straight ahead in the direction indicated by the arrow.
You cannot turn left or right at the junction where this instruction applies.
🔵 2. TURN LEFT ONLY ⬅️
You must turn left in the direction indicated.
Continuing straight ahead or turning right is not permitted where this instruction applies.
🔵 3. TURN RIGHT ONLY ➡️
You must turn right in the direction indicated.
You cannot continue straight ahead or turn left.
🔵 4. KEEP LEFT ↙️
You must pass to the LEFT of the obstruction, traffic island or other feature indicated by the sign.
You'll often encounter these signs on traffic islands and pedestrian refuges.
🔵 5. KEEP RIGHT ↘️
This is the opposite of Keep Left.
You must pass to the RIGHT of the obstruction or traffic island.
Pay attention to these signs, particularly on unfamiliar roads.
🔵 6. MINI-ROUNDABOUT 🔄
This blue circular sign tells drivers they are approaching a mini-roundabout.
You must follow the direction indicated by the arrows.
Remember that normal roundabout priority rules apply, and you should pass around the central markings rather than drive across them, except when the size of your vehicle makes this unavoidable.
🔴 7. GIVE PRIORITY TO ONCOMING VEHICLES
This sign is particularly important where a road becomes too narrow for vehicles travelling in opposite directions to pass safely.
The red arrow represents your direction of travel, while the larger black arrow represents oncoming traffic.
You must give priority to vehicles approaching from the opposite direction.
You may encounter these signs near narrow bridges, traffic-calming measures and other restricted sections of road.
🟦 8. ONE-WAY STREET ⬆️
This sign tells you that traffic travels in one direction only.
You must follow the permitted direction of travel.
Be particularly careful when entering unfamiliar one-way systems, as approaching a junction from the wrong direction can create a serious danger.
🚗 GDS DRIVING TIP
One of the most important skills we teach at Grantham Driving School is early observation and planning.
Seeing a road sign is only the beginning.
A good driver should be asking themselves:
✅ What is this sign telling me?
✅ Does it affect my intended direction?
✅ Do I need to change my speed or road position?
✅ Is there anything I need to do before reaching the sign?
The earlier you recognise and understand the instruction, the more time you have to respond safely.
Remember, learning road signs isn't simply about passing your Theory Test.
It's about becoming a safe, confident and independent driver for life.
🚗 GRANTHAM DRIVING SCHOOL
Patient • Experienced • Trusted
Building safe, independent drivers for life.
📘 NEXT IN OUR SERIES: POST 4 – SPEED LIMIT SIGNS
We'll explain the different speed limit signs, including the National Speed Limit sign and what it actually means on different types of roads.