Truck Entrance Ahead Sign

Introduction

Large commercial vehicles frequently enter highways or roads from rest stops, weigh stations, or industrial zones. The Truck Entrance Ahead Sign is a warning sign used in Canada to alert drivers that large trucks may be entering or crossing the roadway. It’s especially relevant in high-speed zones, and is a key element in Ontario’s G1 driving test sign recognition.

What Does the Truck Entrance Sign Mean?

This sign warns drivers that slow-moving or heavy trucks may be entering the roadway ahead. It features:

• A silhouette of a large truck entering from the right

• A yellow diamond-shaped background, which indicates a warning

• Dashed and solid lines representing lane boundaries and truck movement

• Motion lines that signify the truck’s entry into traffic

This is a cautionary sign, not a regulation, but ignoring it can result in safety risks.

Where Are Truck Entrance Signs Typically Placed?

You’ll find this sign near areas with frequent or unexpected truck traffic, such as:

• Industrial zones and shipping yards

• Highway rest areas or truck stops

• Logging roads or rural access routes

• Construction sites or gravel pits

• Fuel depots, transfer stations, or distribution centers

It is typically posted 100–250 meters before the entrance or merge point.

How Should Drivers Respond to the Truck Entrance Sign?

When approaching this sign, drivers should:

• Reduce speed and be alert for merging trucks

• Maintain a safe following distance

• Be prepared for slower acceleration from trucks merging into traffic

• Avoid overtaking unless it’s clearly safe and legal

• Failing to respect this sign may lead to:

  • Collisions or sudden braking

  • Lane blockages and delays

  • Road test failure if misjudged during the G1 exam

Visual Representation of the Sign

This sign features a black truck icon entering from the side of a marked roadway, set against a bright yellow diamond background, making it highly visible to drivers.

Conclusion

The Truck Entrance Ahead Sign plays a critical role in helping drivers anticipate heavy vehicle movements, especially on highways and near industrial access roads. Being able to recognize and respond to this sign ensures safer road conditions and is essential for passing the Ontario G1 driving test.