READING, Pa. -

Pennsylvania State Police are offering free car-seat checks at their Troop L headquarters in Reading.

The checks come just a few weeks after Pennsylvania enacted a new law that requires all children under the age of two to travel in rear-facing car seats.

Police said they will check to make sure the seats are installed properly. They'll also look at the car seat's expiration date.

"A lot of people don't know this. They come in, car seats generally have a shelf life of six years, and it will say on the car seat 'manufactured on' and it will give you the date and you do the math," said Trooper David Beohm.

The car seat checks are part of National Child Passenger Safety Week. State police will hold another session at the barracks on Kenhorst Boulevard this Saturday from 9 a.m. until 1 p.m. 

Also, police in Exeter Township will hold car seat checks at Jacksonwald Elementary School from 2:30 p.m. until 6:30 p.m.