NF U15-135-3*NF EN ISO 5395-3:2013 Garden equipment - Safety requirements for combustion-engine-powered lawnmowers - Part 3: ride-on lawnmowers with seated operator
1991NF U15-172:1991 Power lawn mowers, lawn tractors, and lawn and garden tractors with mowing attachments. Ride-on lawn mowers. Measurement of sound pressure level.