Chapter 4-1: Signs

The “Signs” section of the Ontario truck driver knowledge test evaluates a candidate’s ability to recognize and understand the meaning of various road signs.

Ontario Truck Driver Test - Chapter 4-1: Signs

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What are EDR (Emergency Detour Route) signs used for?

To mark construction zones

To guide traffic around unscheduled highway closures and back onto the highway

To indicate school zones

To show locations of emergency services only

2 / 30

What does a green circle on a regulatory sign mean?

The activity is not allowed

There is a temporary condition ahead

It is a recommended speed

You may or must do the activity shown

3 / 30

What do warning signs tell you?

Parking regulations only

That your lane is ending immediately

Locations of rest areas only

Dangerous or unusual conditions ahead (e.g., curve, turn, dip, sideroad)

4 / 30

What is the usual shape and colour of warning signs?

Diamond-shaped, yellow background with black letters or symbols

Triangle, fluorescent yellow/green background

Rectangular, green background with white letters

Square, red background with white letters

5 / 30

In addition to flags, what must oversize vehicles/loads display?

A flashing green light only

A sign that says “WIDE TURN” only

A reflective triangle on the bumper only

An “OVERSIZE LOAD” or “D” sign visible from at least 150 metres

6 / 30

What does a school zone sign warn you about?

You are entering a construction zone

You are coming to a school zone; slow down and watch for children

You must come to a complete stop

You are approaching a railway crossing

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What is the shape and colour of a typical school zone sign?

Eight-sided, red background with white letters

Diamond-shaped, yellow background with black symbols

Five-sided, fluorescent yellow/green background with black symbols

Rectangular, green background with white letters

8 / 30

Why is it important to recognize LCV rear signage on the highway?

To know that it is carrying dangerous goods

To know that you have the right-of-way over it

To anticipate extended length and limited speed when preparing to pass

So you can follow it closely for drafting

9 / 30

How may bilingual messages appear on road signs?

Only on separate signs far apart

Together on the same sign or on separate signs one after the other

Only in electronic variable message boards

Only in English on the front and French on the back

10 / 30

What is the usual colour scheme of information and direction signs that tell you about distances and destinations?

Square, red background with white letters

Diamond-shaped, yellow background with black letters

Rectangular, green background with white letters

Rectangular, blue background with yellow letters

11 / 30

What is a long commercial vehicle (LCV)?

A single large truck up to 20 metres in length

A vehicle used only in construction zones

A double trailer that can be up to 40 metres in length

Any vehicle carrying dangerous goods

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What is the shape and colour of a stop sign in Ontario?

Eight-sided, yellow background with black letters

Triangle, red background with white letters

Rectangle, red background with black letters

Eight-sided, red background with white letters

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What do regulatory signs generally do?

Give directions that must be obeyed

Suggest optional driving tips

Indicate tourist attractions only

Warn only of railway crossings

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How must vehicles/loads in excess of legal dimensions be marked?

With bright red or orange flags at least 40 cm square at the extremities

With white flags on the roof only

No special markings are required

With blue flags at least 20 cm square at the front only

15 / 30

What do temporary condition signs warn of?

School zones only

Permanent speed limit changes

Railway crossings only

Unusual temporary conditions like road work, diversions, detours, lane closures

16 / 30

What special requirement applies to oversize load signs when travelling at night?

They must be illuminated by red lights only

They must be made of high-intensity, retro-reflective material

They must be blue instead of yellow

They must be removed at night

17 / 30

What do some information signs include at the bottom to help emergency vehicles and drivers?

A speed limit reminder

A numbering system to assist in determining an appropriate route

A reflective slow-moving triangle

A red flashing light

18 / 30

What should other drivers do when they see a slow-moving vehicle sign?

Maintain speed and follow closely

Watch for these vehicles and reduce speed as necessary

Turn on hazard lights and stop

Honk and pass immediately

19 / 30

At a stop sign, where must you stop if there is a stop line?

At the edge of the intersection

At the edge of the sidewalk

At the stop line

In the middle of the crosswalk

20 / 30

What is the shape and colour pattern of a yield sign?

Triangle, white background with a red border

Square, red background with white letters

Triangle, yellow background with black border

Diamond, yellow background with black symbols

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What should you do when you see a railway crossing sign?

Stop only if the gates are down

Slow down, look both ways for trains, and be prepared to stop

Ignore it if you do not see a train immediately

Speed up to clear the tracks quickly

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What does a railway crossing sign look like?

Round, yellow background with black X

Square, red background with white X

X-shaped, white background with a red outline

Triangle, orange background with black outline

23 / 30

What is the purpose of dangerous goods safety marks, placards or labels?

Show that the vehicle is oversized

Indicate the vehicle’s maximum speed

Mark the vehicle as a school bus

Identify the classification and nature of danger of dangerous goods

24 / 30

What is the typical shape and background colour of temporary condition signs?

Square, white background

Diamond-shaped, yellow background with black letters

Rectangular, green background

Diamond-shaped, orange background with black letters or symbols

25 / 30

What does the slow-moving vehicle sign look like?

Rectangular orange sign with black letters

White triangle with a black border

Diamond-shaped yellow sign

Orange triangle with a red border

26 / 30

What should you do when you encounter bilingual road signs in designated bilingual areas?

Stop and call police for clarification

Assume it applies only to local residents

Read the message in the language you understand best

Ignore the sign if it is not in your first language

27 / 30

If there is no stop line or crosswalk at a stop sign but there is a sidewalk, where must you stop?

At any convenient point

In the middle of the intersection

Past the sidewalk

At the edge of the sidewalk

28 / 30

What must you do at a yield sign?

Let traffic in or close to the intersection go first

Honk your horn and proceed through

Proceed without slowing down if you don’t see a stop sign

Always stop and remain stopped until a police officer directs you

29 / 30

What does a red circle with a line through it on a sign mean?

You must yield to oncoming traffic

The activity is recommended

Construction is ahead

The activity shown is not allowed

30 / 30

Which vehicles must display a slow-moving vehicle sign when on a road?

Only buses and trucks

Farm tractors, farm implements/machinery and vehicles not capable of sustaining over 40 km/h

All vehicles driving over 100 km/h

Only emergency vehicles

Your score is

Truck drivers must identify regulatory, warning, and information signs to ensure safe and lawful driving. This section covers stop, yield, speed limit, and prohibition signs, as well as signs for lane usage, curves, and pedestrian crossings. Familiarity with these signs is essential for making safe driving decisions, preventing accidents, and complying with Ontario’s road regulations. Studying the official driver’s handbook and practicing with sample questions will help candidates succeed in this critical part of the test.