Construction Choose toy vehicles that are strong and durable, preferably with large parts. Any parts that fit completely into a 35mm film canister, like internal fittings or mouldings including windows, dashboards and steering wheels, should be fixed firmly so they cannot be removed by a child. Edges of toy parts should be smooth Wooden vehicles should have smooth surfaces free of splinters. If vehicles are not made from a single piece of wood, the separate pieces should be firmly secured together. Glued sections fitted together with dowelling is preferable to using nails or screws which could cut or scratch should the toy break apart.
Plastic vehicles moulded in one piece are preferable.
The plastic should be strong enough to withstand rough treatment but also flexible so as to not form sharp or jagged sections should it break. Metal vehicles should have no sharp edges or corners. Individual parts should be firmly attached, preferably by secure rivets or welding. Wheels and tyres Wheels and tyres should be firmly attached. If tyres or wheels can be removed they should not expose sharp axle rods, rough metal or splintered wheel rims.