In Alberta, a child must use a booster seat until at least:

Question: In Alberta, a child must use a booster seat until at least:

Answer options:

• Age 4 ✅ Age 6 or 145 cm
• Age 12
• Until parents decide

Correct answer: Age 6 or 145 cm

Explanation: Alberta safety regulations require children to use a child safety seat until they are six years old or weigh 18 kilograms, with booster seat use strongly recommended until they reach 145 centimeters tall so the seatbelt fits correctly. Age four is too young to ride with a standard seatbelt safely, age twelve is far past the required transition point, and parental discretion does not override provincial safety laws. Under the Traffic Safety Act, drivers are legally responsible for ensuring passengers under 16 are properly secured. Memorizing these specific child restraint thresholds is essential for passing the Class 7 knowledge exam.