In South Carolina, like in most other states, there is not really a set law. However, the recommended age is 12. You should also be over 4ft 8in and weigh over 100 lbs. You also should check the laws in your state to make your final decsicion.
Cc while sitting in the front seat
"There is no age restriction for sitting in the front seat in BC traffic law."
Your mother-in-law is sitting in the passengers seat.
The parody goes like this Sitting in the front seat, sitting, in the back seat, "Get the f**k over here" got to make my mind up which seat can I take
If you do not meet the minimum in height and weight for sitting in the front seat or "shotgun" of a car, the airbag will hurt you if you get into a crash.
"Riding shotgun" means sitting in the front seat of a car. Before a car journey, if you are quick, you can call shotgun and you get to sit in the front seat.
In NZ, where I live, sitting in the front passenger seat is standard practice.
90 lbs.
Laws regarding children sitting in the front seat vary by state and country. However, it is generally recommended that children under the age of 13 sit in the back seat to minimize injury risk from airbag deployment in case of an accident.
60 pounds
In Maine, children under 12 years old are required to ride in the back seat of a vehicle when it is practical to do so. Children can only ride in the front seat if all back seats are occupied by other passengers under 12 years old or if the vehicle does not have a back seat.
In New Jersey, children under the age of 8 and under 57 inches tall are required to ride in a child safety seat or booster seat in the back seat of the vehicle. However, there is no specific law in New Jersey that states an age requirement for sitting in the front seat of a vehicle. It is recommended that children under 13 years old sit in the back seat for safety reasons.