How much do you need to weigh to sit in the front seat in pa?

In Pennsylvania, there is no specific weight requirement to sit in the front seat of a vehicle. However, children under the age of 8 must be secured in a federally approved child safety seat in the back seat, unless they are over 4 feet 9 inches tall. It's always best to follow safety guidelines and use appropriate restraints for all passengers regardless of age or weight.