Under Ontario’s Graduated Licensing System, a G1 licence holder is legally classified as a learner driver. A G1 driver is not permitted to operate a motor vehicle alone under any circumstances. Whenever a G1 driver sits behind the wheel, they must be accompanied by an eligible supervising driver sitting in the front passenger seat.

Understanding the legal qualifications, zero-alcohol rules, and responsibilities governing accompanying drivers ensures parents, relatives, and supervisors remain compliant with Ontario law.

Qualifications of an Accompanying Supervising Driver

To legally act as the accompanying driver for a G1 licence holder, the supervising passenger must meet three strict criteria under the Ontario Highway traffic act:

┌────────────────────────────────────────────────────────────────────────┐
│               G1 SUPERVISING DRIVER LEGAL QUALIFICATIONS               │
├──────────────────────────────┬─────────────────────────────────────────┤
│ Requirement                  │ Mandatory Legal Standard                │
├──────────────────────────────┼─────────────────────────────────────────┤
│ Licence Class                │ Must hold a valid Class G licence       │
│                              │ (or higher, e.g., A, B, C, D, E, F)     │
├──────────────────────────────┼─────────────────────────────────────────┤
│ Driving Experience           │ Minimum 4 years of Class G experience   │
│                              │ (indicated by 4 dots on licence card)   │
├──────────────────────────────┼─────────────────────────────────────────┤
│ Blood Alcohol Limit (BAC)    │ Under 0.05% BAC (if age 22 or older);   │
│                              │ STRICT ZERO BAC (0.00%) if under 22     │
└──────────────────────────────┴─────────────────────────────────────────┘

  1. Licence Class: Must hold a valid, unexpired Class G licence (or higher). A G2 driver cannot supervise a G1 driver.

  2. Four Years of Experience: Must have at least four years of driving experience holding a valid licence. (In Ontario, four dots printed on the front of the driver’s licence card indicate four years of experience).

  3. Front Passenger Seat: Must be the sole occupant sitting in the front passenger seat next to the G1 driver.

Strict Alcohol and Drug Limits for Supervising Drivers

A common point of confusion involves the blood-alcohol concentration (BAC) allowed for the accompanying supervisor:

  • If the Supervising Driver is Aged 22 or Older: The accompanying driver must maintain a blood alcohol level below 0.05% BAC. (Although they are not driving, they must be legally capable of taking control of the vehicle).

  • If the Supervising Driver is Aged 21 or Younger: The accompanying driver must maintain a STRICT ZERO (0.00%) BAC level and zero cannabis/drug presence.

  • The G1 Driver: The G1 learner driver must maintain a STRICT ZERO (0.00%) BAC and zero drug presence at all times, regardless of age.

Key Legal Rules for G1 Drivers

When driving under supervision, the G1 driver must observe additional provincial restrictions:

  • 400-Series Highway Prohibition: A G1 driver cannot drive on 400-series highways (e.g., 401, 403, 417, 427, QEW) or high-speed expressways (like the Don Valley Parkway or Gardiner Expressway) UNLESS accompanied by a licensed Ontario Driving Instructor in a dual-control vehicle.

  • Midnight Driving Prohibition: G1 drivers cannot drive between 12:00 a.m. (midnight) and 5:00 a.m. under any circumstances.

  • Seatbelt Capacity: Passengers cannot exceed the number of working seatbelts in the vehicle.

Penalties for Unsupervised Driving

If a G1 driver operates a vehicle without a qualified supervising driver present:

  • The vehicle can be impounded.

  • The G1 driver faces a fine of $110 to $500.

  • A conviction carries a mandatory 30-day G1 licence suspension for a first offense under novice driver regulations.

Prepare for your G1 written exam by practicing on our free G1 simulator.