Do you get the same level of security using the LATCH or the seatbelt to fasten an infant car seat?
Will the seatbelt loosen up over time?
Seatbelts should lock into position. Read the vehicle manual to see how yours lock or use a locking clip.
LATCH is not inherently safer than the seatbelt, it's just supposed to be easier. Use whichever method gives you a more solid install
