G Driving Test Highway Tips Canada (2026 Guide)

What Is the G Road Test?

The G test is a practical road test that lasts about 30–45 minutes. Unlike the G2 test, it includes driving on a 400-series highway or expressway. The examiner will evaluate your ability to handle higher-speed driving, merging, and lane changes in real traffic.

You'll drive your own vehicle (or a rental) with the examiner in the passenger seat. They'll give you directions and score you on a standard evaluation form.

Highway Driving Skills You'll Be Tested On

These are the four core highway skills the examiner will evaluate during your G test. Master each one before test day.

Speed Control on the Highway

Most Ontario highways have a speed limit of 100 km/h. During your G test, you're expected to drive at or near this speed — not 80 km/h in the right lane.

Use cruise control if your car has it — it helps maintain a consistent speed without constantly watching the speedometer. Keep a 3-second following distance at highway speeds, and increase it in rain or poor visibility.

What the Examiner Expects

• Smooth acceleration and braking: No sudden stops or jackrabbit starts. The examiner wants to see controlled, confident driving.
• Consistent speed: Maintain the posted speed limit. Driving too slowly on the highway (below 90 km/h) is just as problematic as speeding.
• Proper mirror use: Check mirrors every 5–8 seconds. The examiner watches your eyes and head movement.
• Correct lane positioning: Stay centred in your lane. Don't drift toward the shoulder or the centre line.
• Calm decision-making: Don't panic when traffic speeds up or a car cuts in front of you. Stay composed and adjust smoothly.
• Proper signalling: Signal every lane change and exit. Cancel signals after completing the manoeuvre.
• Safe following distance: At 100 km/h, you need at least 3 seconds of space. More in rain or poor visibility.

Common Mistakes That Fail the G Test

• Stopping at the end of the on-ramp instead of merging at speed.
• Not checking blind spots before lane changes on the highway.
• Driving too slowly (below 90 km/h) in the right lane.
• Staying in the left lane when not passing.
• Braking on the highway instead of on the off-ramp.
• Forgetting to signal when changing lanes or exiting.
• Making jerky steering corrections — stay smooth and relaxed.
• Tailgating — following too closely at highway speeds.

Ontario Highway Driving: What You Need to Know

The G test is the only Ontario driving test that includes mandatory highway driving — and it's the part that trips up the most drivers. Here's a detailed breakdown of what examiners look for on Ontario's 400-series highways and how to handle each situation confidently.

Entering the Highway (On-Ramp)

The on-ramp is where many G test failures happen. The examiner is watching to see whether you accelerate to highway speed before merging — not after. Ontario's 400-series highways have a posted speed of 100 km/h. You should be doing close to that speed by the time you reach the merge point.

• Check your mirrors and blind spot before entering the acceleration lane.
• Accelerate smoothly and firmly — don't creep onto the highway at 60 km/h.
• Signal your merge early (at least 3 seconds before moving over).
• Match the speed of highway traffic before merging — not after.
• If there's a gap, take it confidently. If not, adjust your speed to find one.
• Never stop on the on-ramp unless absolutely necessary — it's dangerous and will fail you.

Lane Discipline on the Highway

Ontario law requires drivers to keep right except to pass. On a multi-lane highway, the left lane is for passing only — not for cruising. Examiners specifically watch for this. Sitting in the left lane at 100 km/h when the right lane is clear is a deduction.

Exiting the Highway (Off-Ramp)

Exiting the highway is the mirror image of entering. Signal early, move to the right lane well before the exit, and reduce your speed on the off-ramp — not on the highway itself. Braking on the highway to slow down before the exit is a common mistake.

• Signal your exit at least 3 seconds before moving to the right lane.
• Move to the right lane early — don't leave it to the last second.
• Maintain highway speed until you're on the off-ramp, then decelerate.
• Watch for the posted speed on the off-ramp (often 60–80 km/h) and comply.
• Come to a complete stop at the stop sign or red light at the bottom of the ramp.

G Test Highway Quiz

Test your highway driving knowledge with these scenario-based questions.

Final Tips to Pass the G Test

• 1Practice highway driving at least 10 times before your test. Comfort comes from repetition.
• 2Drive on the specific highway near your DriveTest centre — test routes are often similar.
• 3Get comfortable driving at 100–110 km/h before test day. Speed anxiety is real.
• 4Practice merging in different traffic conditions — light, moderate, and busy.
• 5Don't grip the wheel too tightly — relaxed hands mean smoother steering.
• 6If you make a small mistake, stay calm and keep driving. One error won't fail you.
• 7Book your test in the morning when traffic is more predictable.
• 8Do a practice drive on the highway the day before your test to build confidence.

What You Can Do With a Full G Licence

• Drive anywhere in Ontario and Canada without restrictions.
• Drive at any time of day or night.
• Carry any number of passengers.
• Supervise G1 drivers as a fully licensed driver.
• Drive in the United States — your G licence is recognized internationally.

Frequently Asked Questions