Ontario Road Signs: MTO G1 Knowledge Test, 1 Metre Bike Law & 20 Metre School Bus Stop
What speed applies when there is no posted limit in Ontario? What is the school bus rear stop distance, and when is a radar detector illegal? The default unposted speed is 50 km/h in cities and towns, 80 km/h elsewhere. Approaching a school bus from the rear, stop at least 20 metres away. Radar detectors are illegal in Ontario even when not in use. The Ministry of Transportation Ontario (MTO) at ontario.ca administers the G1 knowledge test at DriveTest Centres across Toronto, Ottawa, Mississauga, Brampton, and Hamilton. Every question on the G1 test comes from the Official MTO Driver Handbook.
Table of Contents
1. Why Road Signs Matter in Ontario
Ontario uses a graduated licensing system. New drivers start at Class G1 after passing the knowledge test, move to Class G2 after the first road test, then earn full Class G after the second road test. Apply and test at any DriveTest Centre across Ontario. The fee covers the knowledge test and two road tests. G1 holders cannot drive on 400-series highways with speed limits over 80 km/h, including the 401, QEW, 400, and Gardiner Expressway in Toronto. All knowledge test questions come from the Official MTO Driver Handbook at ontario.ca.
2. Road Sign Shapes and Colours in Ontario
Ontario uses the North American shape and colour system with metric measurements. On Highway 401, the QEW, or a rural county road, shape and colour identify a sign before the text is readable at speed. Know every row in this table before your DriveTest Centre G1 appointment.
| Shape | Diagram | Meaning | Example Sign |
| Octagon (8-sided) |  | STOP. always and only |  |
| Triangle (inverted) |  | Yield to other traffic |  |
| Diamond |  | Warning - hazard ahead |  |
| Rectangle (vertical) |  | Regulatory - rules of the road |  |
| Rectangle (horizontal) |  | Guide or informational |  |
| Pentagon (5-sided) |  | School zone or crossing - exclusively |  |
| Round (circle) |  | Railroad crossing advance warning - exclusively |  |
| Pennant |  | No passing zone - exclusively |  |
| Orange (any shape) |  | Construction and work zone warnings |  |
| Blue (any shape) |  | Motorist services - gas, food, lodging, hospitals |  |
| Brown (any shape) |  | Recreation areas, parks, and scenic routes |  |
Triangle (inverted)
Yield to other traffic
Diamond
Warning, hazard ahead
Rectangle (vertical)
Regulatory. rules of the road
Rectangle (horizontal)
Guide or informational
Pentagon (5-sided)
School zone or crossing. exclusively
Round (circle)
Railroad crossing advance warning. exclusively
Pennant
No passing zone. exclusively
Orange (any shape)
Construction and work zone warnings
Blue (any shape)
Motorist services. gas, food, lodging, hospitals
Brown (any shape)
Recreation areas, parks, and scenic routes
3. Ontario Regulatory Signs
Regulatory signs in Ontario carry legal force under the Highway Traffic Act (HTA). Violations result in fines and demerit points. Radar detectors are illegal in Ontario vehicles regardless of whether the device is active. White rectangular signs, prohibitory signs, and lane-control signs are all tested on the G1 knowledge test.
STOP Sign
Come to a full stop; yield to all traffic and pedestrians before proceeding
YIELD Sign
Slow down and give right-of-way to cross traffic or pedestrians
Speed Limit Sign
Maximum legal speed under ideal conditions
Do Not Enter Sign
You are going the wrong way; do not proceed
Wrong Way Sign
You have entered a one-way road going against traffic
No U-Turn Sign
U-turns are prohibited at this location
No Left Turn Sign
Left turns are not allowed
No Right Turn Sign
Right turns are not allowed
One Way Sign
Traffic moves in one direction only
Keep Right Sign
Stay to the right of an island or obstruction
No Passing Zone Sign
Passing is forbidden in this stretch. pennant-shaped sign
Do Not Pass Sign
Passing prohibited. do not overtake vehicles ahead
No Turn on Red Sign
No turns permitted on a red light at this intersection
No Left Turn on Red Sign
Left turn on red is prohibited here
No Right Turn on Red Sign
Right turn on red is prohibited here
Turn Left Only Sign
You must turn left from this lane
Turn Right Only Sign
You must turn right from this lane
Straight or Turn Right Sign
You may go straight or turn right from this lane
Minimum Speed Limit Sign
You must drive at least this speed on this road
Slower Traffic Keep Right Sign
Slower vehicles must use the right lane
No Parking Sign
Parking is prohibited in this area
No Trucks Sign
Commercial trucks are prohibited on this road
No Bicycles Sign
Bicycles are not permitted on this road
No Pedestrian Crossing Sign
Pedestrians must not cross here
Reserved Parking Sign
Parking reserved for designated users (e.g., accessible parking)
Four Way Stop Sign
All four directions must stop at this intersection
Stop Except Right Turn Sign
All traffic must stop except those turning right
Left Turn Yield on Green Sign
Left-turning vehicles must yield to oncoming traffic on green
Lane Use Control Sign
Indicates which movements are permitted or prohibited from a specific lane
Restricted Lane Ahead Sign
An upcoming lane has restrictions on who may use it
4. Ontario Warning Signs
Yellow diamond-shaped warning signs alert you to hazards ahead. they do not prohibit anything, but ignoring them causes accidents. Common on rural Ontario provincial highways and county roads.
Left Curve
A curve to the left is ahead; reduce speed
Right Curve
A curve to the right is ahead; reduce speed
Sharp Left Turn
A very sharp left turn is coming; slow down significantly
Sharp Right Turn
A very sharp right turn is coming; slow down significantly
Winding Road
Series of curves ahead
Set of Curves (Left-Right)
Multiple curves ahead, first curving left then right
Set of Curves (Right-Left)
Multiple curves ahead, first curving right then left
Sharp Turns (Left-Right)
Successive sharp turns ahead. left then right
Slippery When Wet
Road surface becomes slick in rain; reduce speed
Deer Crossing
Wildlife frequently cross here. common in Northern Ontario along Highway 17, Highway 11, and the Trans-Canada corridor; moose are also serious hazards
Pedestrian Crossing
Crosswalk ahead; watch for foot traffic
Bicycle Crossing
Cyclists frequently cross here; slow down and yield to bikes
School Zone / Crossing
Children may be present; slow to posted speed (usually 30 km/h)
School Crossing Ahead
A school crosswalk is approaching; watch for children and crossing guards
Divided Highway Begins
Road splits into two one-way sections; keep right
Divided Highway Ends
Two-way traffic resumes
Merging Traffic
Another lane of traffic is joining yours
Added Lane
A new lane is being added ahead. merging traffic does not need to yield
Lane Ends Ahead
Your lane ends ahead. merge safely into the adjacent lane
Lane Ends Merge Left
Your lane ends. move to the left lane
Left Lane Ends
The left lane ends ahead. merge right
Road Narrows
The road becomes narrower ahead; stay alert
Narrow Bridge Ahead
Bridge ahead is narrower than the road. proceed carefully
Low Clearance
Bridge or overhead obstruction with limited height clearance
Railroad Crossing (RR)
Tracks ahead; look and listen for trains
Hill / Steep Grade (Downgrade)
Downgrade ahead; trucks should check brakes
Bump
A raised bump or speed hump is ahead; slow down
Dip
A dip in the road is ahead; reduce speed
Loose Gravel
Road surface has loose gravel. reduce speed and increase following distance
Pavement Ends
Paved road ends ahead; expect gravel or dirt surface
Shoulder Drop Off
Road shoulder drops off steeply. avoid driving on the edge
Watch for Ice on Bridges
Bridges freeze before road surfaces. reduce speed in cold weather
Two Way Traffic Ahead
Divided road ends. two-way traffic begins ahead
Cross Road
An intersection with a crossing road is ahead
Cross Traffic
Traffic crosses your path ahead. be prepared to yield
T Intersection
The road ends at a T. you must turn left or right
Side Road
A side road enters the highway ahead at an angle
Highway Intersection Ahead
A highway intersection is approaching; be prepared to yield or stop
Road Entering Curve
A road enters from the side on a curve ahead. watch for merging traffic
Roundabout
A roundabout is ahead. yield to circulating traffic and travel counterclockwise
Truck Rollover
High risk of truck rollover on this curve or ramp. trucks reduce speed significantly
Weave Area
Traffic is entering and exiting simultaneously. expect lane changes and merging
Advisory Speed
Recommended safe speed for a curve or hazard. not legally enforced but strongly advised
Traffic Signal Ahead
A traffic light is ahead. be prepared to stop
5. Guide Signs and Highways in Ontario
Guide signs do not regulate driving. they show destinations, distances, and services. Green = highway navigation. Blue = motorist services. Brown = parks and recreation.
400-series Highway Marker
Identifies Ontario 400-series highways (Highway 400, 401, 402, 403, 404, 410, 416, 417, QEW)
Provincial Highway Marker
Marks provincial highways (e.g., Highway 7, Highway 11, Highway 17 Trans-Canada, Highway 60)
County Road Marker
Identifies county roads and regional roads in Ontario municipalities
Exit Sign (Exit Only)
Shows upcoming freeway exit and distance
Mile Marker
Indicates distance from the state line or route origin
Services Sign
Points to nearby gas, food, lodging, or medical facilities
Hospital Sign (H)
Indicates direction to the nearest hospital
Diesel
Indicates diesel fuel is available at the next service area
Park / Recreation Sign
Directs to state parks, campsites, and scenic areas
6. Traffic Signals in Ontario
Flashing red = stop, then proceed when safe. Flashing yellow = yield. Ontario also tests streetcar rules: when a streetcar stops and its doors are open, you must stop and not pass until all passengers have boarded and the doors close. All signal types are tested on the G1 knowledge test.
Standard Traffic Lights
Steady Red
Come to a complete stop behind the stop line. Wait until green.
Steady Yellow
Prepare to stop. the light is about to turn red. Do not speed up to beat it.
Steady Green
Proceed if the intersection is clear. You must still yield to pedestrians and cross traffic.
Green Arrow (left)
You may proceed only in the direction of the arrow. Oncoming traffic is stopped.
Yellow Arrow (no left)
The protected turn is ending. Prepare to stop or yield if you have not yet entered the intersection.
Red Arrow (no left)
Do not turn in the direction of the arrow. Wait for a green arrow or green light.
Green. no left arrow
Proceed straight or right. left turn not permitted on this phase.
Opposing Traffic Extended Green
Oncoming traffic has an extended green phase. wait before turning left.
Flashing Signals
Flashing Red
Treat as a STOP sign, come to a complete stop, then proceed when safe.
Flashing Yellow
Treat as a YIELD sign, slow down, look carefully, and proceed with caution.
Flashing Red Beacon
Overhead flashing red beacon. treat as a stop sign. Come to a full stop, then proceed when safe.
Flashing Green Arrow
You may turn in the direction of the arrow after yielding to oncoming traffic and pedestrians.
Pedestrian Signals
WALK / White Walking Figure & DONT WALK / Orange Hand
White walking figure = pedestrians may cross. Orange hand = do not start crossing; if already crossing, finish quickly.
Flashing Orange Hand + Countdown
Crossing phase is ending. Pedestrians who have started may finish; others should not begin.
Key test point: Flashing red = stop sign. Flashing yellow = yield. This distinction is one of the most commonly tested signal questions on the Ontario exam.
7. Ontario Pavement Markings
Yellow lines separate opposing traffic. White lines separate same-direction traffic. The Ontario exam tests lane lines, road arrows, curb markings, and pavement symbols.
Line Colors
Yellow lines
Separate traffic moving in opposite directions
White lines
Separate traffic moving in the same direction, or mark the edge of the road
Line Types
Broken yellow line (Single)
Passing allowed when safe on your side
Solid yellow + broken yellow
Passing allowed only on the broken-line side
Double solid yellow lines
No passing in either direction
Broken white line
Lane changes permitted when safe
Solid white line
Do not cross. lane edge, crosswalk, or stop line
Double solid white lines
Do not change lanes. often used near intersections or toll areas
Center Turn Lane
Shared left-turn lane. used to begin or complete a left turn only
Center Turning Lane (sign)
Overhead or posted sign marking a shared center left-turn lane
Pavement Symbols & Special Markings
Arrows in lane
Indicate which direction(s) you may travel from that lane
Stop line (wide white bar)
Ontario: stop at least 5 metres from the nearest rail; never drive around, under, or through a railway gate at red lights and stop signs
Stop Here on Red
Painted instruction on pavement. stop at this marked line on red
Crosswalk lines
Mark the pedestrian crossing area. yield to pedestrians within these lines
Broken white line (pavement)
Lane changes permitted when safe
Solid white line (pavement)
Do not cross. lane edge, crosswalk, or stop line
Double solid white lines (pavement)
Do not change lanes. often used near intersections or toll areas
Railroad crossing markings (X + RR)
Advance warning of tracks ahead. painted on pavement before the crossing
Diagonal yellow lines (gore area)
Do not drive in this area. marks a traffic island or diverging zone
Bicycle lane marking
White painted lane reserved for cyclists. do not drive or park in it
HOV / Carpool lane diamond
Lane restricted to vehicles with 2 or more occupants during posted hours
Yellow curb
No parking or stopping at any time
Red curb
No stopping, standing, or parking. fire zone
White curb
Passenger loading/unloading only. brief stops permitted
Key test point: Yellow lines always separate opposing traffic. White lines always separate same-direction traffic. This is a foundational rule that appears on nearly every DMV exam.
8. Ontario Work Zone Signs
Orange signs with black lettering mark construction zones. they are temporary and override all normal signs. In Ontario, fines for moving violations in active work zones are doubled.
Road Work Ahead
Construction zone begins ahead. reduce speed and be alert
Flagger Ahead
A person is directing traffic. obey their signals immediately
Workers Ahead
Road workers are present. slow down and be prepared to stop
Active Work Zone
You are in an active work zone. fines doubled, drive with extra caution
End of Active Work Zone
Work zone ends. normal speed and rules resume
Work Zone Headlights
Headlights required in this work zone
Lane Closed Ahead
A travel lane ends ahead. merge early and do not pass in the closed lane
Road Closed
Road is completely closed. do not enter, follow detour signs
Orange barrels / cones
Mark lane boundaries and closures in active work zones
Channelizing devices (barricades)
Direct traffic around obstacles or closed areas
- You must obey a flaggers directions even if they conflict with existing signs or signals.
- Speed limits posted in work zones are enforceable even when workers are not present.
- Ontario law doubles fines for many moving violations committed in active work zones.
- Never drive through or around a closed lane barrier. wait for a flagger or follow detour signs.
Key test point: Orange always means construction or work zone. If you see orange, reduce speed and increase following distance immediately.
9. Railroad Crossing Signs in Ontario
Round yellow sign = advance warning (first). X crossbuck = at the crossing (yield). Railroad signs appear in sequence. knowing that order is tested on the Ontario exam.
Advance Warning Sign
Railroad crossing ahead. the first sign you see. Begin slowing down.
RR Crossbuck Sign (X-shaped)
Located at the crossing itself. yield to trains. Treat as a yield sign if no gates or lights.
Railroad Crossing (at crossing)
Marks the exact railroad crossing location
Crossing Gates
Lower when a train is coming. never drive around or under a lowered gate
Pavement markings (X + RR)
Painted on the road surface before the crossing as an advance warning
Flashing Red Lights
A train is approaching, stop and wait. Do not proceed until lights stop and it is fully clear.
Stop Line
Stop your vehicle behind this line. at least 15 feet from the nearest rail
- The round yellow advance warning sign is always the first sign you see before a crossing.
- The crossbuck (X-shaped sign) at the crossing itself acts as a yield sign. stop if a train is present.
- Never stop on the tracks. if traffic is backed up, wait until you can clear the tracks completely before crossing.
- School buses, vehicles carrying hazardous materials, and transit buses must always stop at all crossings. even if no train is visible.
Key test point: The round yellow sign = advance warning. The X crossbuck = at the crossing. Know the difference. both appear on the Ontario exam.
10. Ontario School Zone Signs
Pentagon-shaped, fluorescent yellow-green. school zone traffic signs are unique in both shape and color. Speed limit is 30 km/h when flashers are active or children are present. Heavily enforced and frequently tested.
School Zone
School ahead. be alert for children, reduce speed
School Speed Limit
Speed limit is 30 km/h when children are present or when flashers are active
Speed Limit Lights Flashing
Speed limit applies only when the flashing lights are active
School Crossing Ahead
Crosswalk used by schoolchildren ahead. yield to crossing guard and students
- The school zone speed limit of 30 km/h applies when the flashing yellow lights on the sign are active, or when children are visibly present.
- You must stop for a school bus displaying flashing red lights and an extended stop arm. in both directions on undivided roads.
- On roads with a true median or physical barrier, only traffic behind the bus must stop. oncoming traffic may proceed. A center turn lane does not count as a divider.
- Passing a stopped school bus is a primary offense in Ontario. fine up to $1,000 and possible license suspension.
- Always yield to crossing guards. their signal overrides traffic signals and signs.
Key test point: The pentagon shape is used exclusively for school signs. No other sign category uses this shape. making it one of the easiest shapes to identify on the exam.
11. Pedestrian and Bike Signs in Ontario
Ontario law requires drivers to leave at least 1 metre of clearance when passing a cyclist where it is practical to do so. Pedestrians have right-of-way at all crosswalks. marked or unmarked. Cyclists get 3 feet minimum clearance. Both sign types use fluorescent yellow-green and appear on the Ontario knowledge exam.
Pedestrian Crossing Sign
A marked crosswalk is ahead. watch for pedestrians crossing
Bicycle Crossing Sign
Cyclists frequently cross here. reduce speed and yield to bikes
No Bicycles
Bicycles are prohibited on this road or path
No Pedestrian Crossing
Pedestrians must not cross here
- Pedestrians always have the right-of-way in marked crosswalks. you must yield even if no sign is present.
- Ontario law requires motorists to give cyclists at least 3 feet of clearance when passing.
- Fluorescent yellow-green is used for both school and pedestrian/bike signs. the shape distinguishes between them.
Key test point: Pedestrians always have right-of-way at crosswalks. marked or unmarked. This rule appears on virtually every state DMV exam.
12. How to Pass the Ontario G1 Knowledge Test
- Study the shapes first. If you can identify a sign by shape alone, you have already narrowed it down significantly.
- Use the official handbook. Download the Ontario Driver License Study Guide from the Ontario State Police website. it is free and covers all tested signs.
- Practice with flashcards. Quiz yourself on sign images, not just text descriptions.
- Do not confuse warning and regulatory. Yellow diamonds warn; white rectangles regulate. That distinction shows up on the test.
- Pay attention to school zones. Ontario strictly enforces 30 km/h school zone rules, and the test often includes questions about those signs.
- Know flashing signal rules cold. Flashing red = stop sign. Flashing yellow = yield. This is one of the most commonly missed questions.
- Learn yellow vs white lines. Yellow = opposing traffic. White = same-direction traffic. Simple rule, frequently tested.
- Orange always means construction. Any orange sign requires you to reduce speed and increase alertness.
- Take free practice tests. Sites like DMV.org and driving-tests.org offer Ontario-specific sign quizzes.
- Ontario-specific tip: Deer crossing signs are especially common on rural highways through the Northern Ontario and the Trans-Canada highway corridor. slow down, these are active wildlife zones.
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