Constable Emily Plew said no enforcement action was taken as the checkpoint, in The Warehouse South Dunedin car park, was aimed at educating motorists.
''Most of them have had minor [issues] like they might be a bit loose or the seatbelts are sitting poorly on the child,'' she said.
In general, parents were grateful for advice about the correct installation of restraints.
Rather than punishing parents, police wanted to ensure children were safely secured in vehicles and parents were aware regular adjustments needed to be made as the child grew, she said.
Roading police officers from the Otago Coastal area set up checkpoints at least once a month to educate motorists about child restraints.
Police hoped to carry out regular checks in Mosgiel, Oamaru and Balclutha, where parents could have their child's restraints inspected.
The campaign was carried out in conjunction with Plunket.
Its national adviser, Sue Campbell, said she was pleased with the response from the public.
''For us at Plunket we just want to make sure we get this right,'' she said.
