"We record the make/type of seats, and what we needed to fix. For example, if we need to tighten the seatbelt or harness, if the tether needs anchoring, harness height is too high or low or if a baby is forward facing rather than rear-facing.
"If we don't have to make any adjustments or changes it's classed as a perfect install."
She said other car seat technicians from around New Zealand also ran various checks and installs.
"Our (Rotorua) statistics are very similar to those nationwide."
Ministry of Transport analytics and modelling manager Dan Jenkins said all drivers were responsible for ensuring that any child travelling in their vehicle used an appropriate child restraint.
"Children must be correctly seated in child restraints that are correctly secured into the car to keep them safe from crash forces," Jenkins said.
Under New Zealand law, all children under 7 must use an approved child restraint appropriate for their age and size. Children aged 7 must be secured in a restraint if one is available in the vehicle.
International best practice recommends the use of an appropriate child restraint (or booster seat) until your child reaches 148 cm tall or is 11 years old. Child restraint and medical professionals recommend that you keep children under the age of 2 in a rear-facing restraint until practicable.
Sunday's clinic starts at 10am and ends at 12pm.
"Every year we have children dying on our roads. For that reason we would love to see as many people as possible on Sunday," Waitoa said.