What does the LCV placard on the back of a double trailer tell you?

Expect extra length and limited speed

The truck carries dangerous goods

The traffic lights are dark because of a power failure. How do you treat the intersection?

As a green light for main roads

Ontario Class A (AZ): Signs, signals and markings

Truck-specific regulatory and warning signs (lane bans, weight limits, clearance, inspection stations), oversize and slow-moving vehicle signs, traffic lights and pavement markings.

No sign-up
Every answer explained
Independent · not a government site

20 questions
Topic drill

0/20

Signs, signals and markings · Question 1Score 0/0

Unless a sign forbids it, what may you do at a red light after a full stop?

Tip: press 1–4 to answer and Enter for the next question.

Study reference: MTO Truck Handbook (online edition, 2026), Ch. 4 Traffic signs and lights — Signs, traffic lights, pavement markings

All 20 questions in this test

Every question and its answer choices. The correct answers and explanations appear when you take the test above.

Unless a sign forbids it, what may you do at a red light after a full stop?
1. Go straight when clear
2. Turn right when clear
3. Turn left from any road
4. Nothing until green
Which trucks need a valid transponder to use Highway 407 ETR?
1. Only dangerous goods trucks
2. Trucks over 5 tonnes
3. All trucks with trailers
4. Trucks over 10 tonnes
What does the LCV placard on the back of a double trailer tell you?
1. The truck is about to turn
2. The driver is in training
3. The truck carries dangerous goods
4. Expect extra length and limited speed
Wide, closely spaced broken lines appear on your left. What do they usually mean?
1. Your lane is ending or exiting
2. You may pass freely
3. A bike lane is ahead
4. A school zone begins
The traffic lights are dark because of a power failure. How do you treat the intersection?
1. As a green light for main roads
2. As an all-way stop
3. As a yield for trucks only
4. As an uncontrolled crossing
A yellow sign shows a truck on a curved arrow. What does it advise?
1. Trucks may pass on the curve
2. Trucks should slow for the curve
3. No trucks allowed on the curve
4. Truck entrance on the curve
On a regulatory sign, what does a red circle with a slash mean?
1. The activity is allowed
2. The activity shown is not allowed
3. The rule applies at night only
4. Caution is advised
A sign shows a truck and "6.5 m" over a lane with a slash. What does it mean?
1. No trucks over 6.5 m long in that lane
2. Trucks must keep 6.5 m apart in the lane
3. Maximum truck height is 6.5 m in the lane
4. Trucks only, starting 6.5 km ahead
Signals are flashing on a sign showing a truck and an inspection station. What must you do?
1. Slow to 40 km/h and pass
2. Use the left lane
3. Turn on your flashers
4. Enter the inspection station
What do yellow lines on the pavement separate?
1. Traffic going the same direction
2. Opposite directions of traffic
3. Parking spaces from driving lanes
4. Bike lanes from regular car lanes
A yellow sign shows "3.9 m" between two arrows. What is it?
1. Distance in km to the next exit ramp
2. Maximum trailer length allowed ahead
3. Maximum clearance height ahead
4. Minimum lane width for the next section
What do orange diamond-shaped signs warn about?
1. Permanent sharp curves in the road
2. School zones with lower speed limits
3. Hospital routes and emergency entrances
4. Temporary conditions like road work
What shape and colour is a stop sign?
1. Red triangle
2. White rectangle
3. Red octagon
4. Yellow diamond
What does a steep-hill warning sign tell a truck driver?
1. Passing is allowed uphill
2. A lower gear may be needed
3. Chains are required
4. Trucks are banned on the hill
What might a sign banning heavy trucks between 7 p.m. and 7 a.m. mean for you?
1. You must use your flashers on that road
2. You may use it if your trailer is empty
3. You must drive under 40 km/h on that road
4. You may not use that road then
What does a flashing green light mean?
1. Pedestrians may now cross the road
2. The light is about to turn red
3. Proceed with caution as at an all-way stop
4. Advance green; oncoming has red
What does a sign about doubled fines in a construction zone apply to?
1. Using high beams in the work zone
2. Speeding when workers are present
3. All traffic offences at any time
4. Parking on the shoulder in the zone
How is a pedestrian crossover marked?
1. A single solid yellow line across the road
2. Green paint on the road and a stop sign
3. White double lines, X marks, yellow lights
4. Red bricks and a flashing red light overhead
What does a flashing yellow light mean?
1. Proceed with caution
2. Stop, then go
3. The light will turn green
4. Trucks must stop
A sign shows "5 t" with an axle symbol. What does it restrict?
1. Trailers to 5 m long
2. Total vehicle weight to 5 tonnes
3. Load per axle to 5 tonnes
4. Speed to 50 km/h

Signs, signals and markings: key rules to remember

Our summary of what the official handbook says on this topic, in our own words. Read it before or after the practice questions above, then check the original chapter. Read the official chapter ↗

Basic shapes

Stop: red octagon. Yield: white triangle with red border. School zone: five-sided fluorescent yellow-green. Railway crossing: white X with red outline.
Regulatory signs are usually rectangles or squares; a green circle means allowed, a red circle with a slash means not allowed.
Warning signs are usually yellow diamonds; temporary-condition (construction) signs are orange diamonds; guide signs are green.

Truck-related regulatory signs

Signs can ban trucks from a lane, ban trucks over 6.5 m long from a lane, permit or ban heavy trucks on a road (sometimes only at set hours), limit vehicles to a weight (for example 10 tonnes) or to a load per axle (for example 5 tonnes).
Separate signs permit or ban trucks carrying dangerous goods on a roadway.
A sign with flashing signals means trucks must enter the inspection station.
Trucks over 5 tonnes need a valid 407 transponder to use the 407 ETR.
Bridge signs can show different weight limits for different truck types.

Truck-related warning signs

Clearance signs show the maximum vertical clearance (for example 3.9 m); some warn tall vehicles to choose another route.
A curve sign with a truck symbol advises trucks to slow down because of the curve's small radius.
Warning signs can advise trucks over 10 tonnes not to use a road, or show a truck entrance ahead on the side indicated.
Steep-hill warning: you may need a lower gear.

Other signs

Slow-moving vehicle sign: orange triangle with red border, for vehicles that travel 40 km/h or less.
Long commercial vehicle placard on the rear of a double-trailer combination up to 40 m long.
Temporary signs can double speeding fines in a construction zone when workers are present.

Traffic lights

A red light means stop at the stop line, or the crosswalk, or the sidewalk edge, or the intersection edge, in that order.
You may turn right on red after a full stop unless a sign forbids it, and left on red from a one-way road onto a one-way road.
A flashing green light or left green arrow with a green light is an advance green: oncoming traffic still faces red.
A yellow arrow after a left-turn arrow means do not start the turn; stop if you safely can.
Flashing red: full stop, then go when safe. Flashing yellow: proceed with caution.
Blank (power-out) signals: treat the intersection as an all-way stop.
A transit priority signal (white vertical bar) lets transit vehicles go while other traffic faces red.

Pavement markings

Yellow lines separate opposite directions; white lines separate traffic going the same way.
A solid line on your left means do not pass; a broken line means you may pass when clear.
Wide, closely spaced broken lines (continuity lines) on your left mean your lane is ending or exiting.
A pedestrian crossover is marked by double white lines with an X in each approaching lane and overhead yellow lights.

Study the Signs, signals and markings rules as flashcards →