Parachute Canada recommends that no child under the age of 16 drive an ATV because they do not have the skill, motor development, or strength to handle the ATV.
The Canadian Pediatric Society recommends that children and teens under the age of 16 should not operate snowmobiles. Also, children under the age of 6 should never ride as passengers on a snowmobile - they should ride as a passenger in a tow-behind sled with a rigid bar connection.
In Newfoundland Labrador, Regulations for ATVs:
A person must be 16 to operate an adult size ATV (over 90cc).
A person aged 14 or 15 can operate an ATV up to and including 90cc, if accompanied and supervised by a person 19 years of age or older (supervised means in view and voice communication is possible).
A person under 14 years of age is not permitted to operate any size ATV.
Appropriate certified helmet is mandatory.
In Newfoundland Labrador, Regulations for Snowmobiles:
A person under the age of 13 must be accompanied by a person who is 19 years of age or older.
A person under the age of 13 shall not drive a motorized snow vehicle.