Road Narrows Sign
-
CDE
- Update on. 23 Apr, 2025

Introduction
The “Road Narrows” sign is a key warning indicator used across Canadian roads to alert drivers that the width of the road ahead will decrease. Whether due to construction, natural terrain, or design, this sign helps prepare motorists to reduce speed and adjust their positioning—crucial knowledge for passing the Ontario G1 driving test.
What Does the Road Narrows Sign Mean?
This sign shows two curved black lines bending inward on a yellow diamond background, indicating:
-
The road will narrow on both sides
-
Lane widths may reduce, requiring extra caution
-
It may be harder to pass or change lanes
Where Are Road Narrows Signs Found?
You’ll commonly see this sign:
-
On rural or older roads where shoulders shrink
-
Before bridges or tunnels
-
Near construction zones
-
On hilly or forested roads with limited space
-
In areas with temporary detours
How Should Drivers Respond to the Road Narrows Sign?
When approaching this sign:
-
Slow down and remain alert
-
Avoid overtaking other vehicles
-
Maintain a central lane position, especially on two-way roads
-
Watch for oncoming traffic in narrow sections
-
Prepare for merging lanes or shared roadways
Visual Representation
This sign has a bold yellow background with two inward-curving black bars, clearly illustrating the narrowing shape of the road ahead.
Conclusion
The Road Narrows sign is a proactive safety warning, reminding drivers to reduce speed, stay cautious, and anticipate tighter space. It’s an important symbol in both city and country driving, and essential for success on the Ontario G1 exam.
Please Comment Below