The average length of the reproductive cycle for females is 2â4 weeks. Females reach sexual maturity (puberty) between 8 and 18 months of age. There is a tremendous variability in the maturation age between breeds, and even within a breed of dog. The first stage of the reproductive cycle is proestrus, in which eggs in the ovaries begin to mature and estrogen levels begin to rise.
It usually takes a head-on impact into something fairly solid at 30mph or more to trigger a frontal airbag. A car could be involved in a roll-over crash at 100mph or more, where it could flip over several times, and if there was no significant single front impact detected, the airbags wouldn't trigger.
When the passenger side front airbag is active, children younger than age 6 or less than 60 lbs. must be in the rear seat, if available. Children 4 and 5 years of age or 40-60 lbs. must be restrained in a booster seat. Children ages 1 until 4 or 20-40 lbs. must be restrained in a forward-facing child safety seat. Children under age 1 year or less than 20 lbs. must be restrained in a rear-facing child safety seat.