Funster No : 2327
Join Date: Apr 2008
Location: Eastbourne East Sussex
About Me: Retired Hospital Pharmacist
Interests: Motorhoming, Big Dinners, Wine Beer
MH Type: A Class
MH Model: Rapido 999M
Years Motorhoming: 33 years
Thanked 836 Times in 763 Posts
When my kids were small, and rear seat belts in motorhomes hadn't been invented, I fitted a child seat to a lap belt fixed to a steel frame bolted through the floor on a rearward facing seat.
It was obviously not crash tested but I reckoned it was pretty safe. This was in a van with seven berths and only two seatbelts.
Modern vans do tend to have the same number of berths and seatbelts, with some exceptions/.