At what age is it illegal to leave children in an unattended vehicle?

The law specifies that leaving children under the age of 6 unattended in a vehicle is considered illegal. The intention behind this regulation is to protect young children from potential dangers, including the risk of heatstroke, injury, or abduction. Children of this age are still developing physically and emotionally, and they often lack the understanding necessary to respond appropriately in emergency situations. Therefore, the legal limit has been set at under 6 years old to ensure their safety and well-being when in a vehicle alone.