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Piccini TA 12-21: an EU class O4 trailer with a gross vehicle weight of 33,000 kg, an unladen weight of 26,020 kg and a payload of 6,980 kg, built in 1989
With a gross vehicle weight of 33,000 kg, the Piccini TA 12-21 falls into EU trailer class O4, the heavy trailers and semi-trailers above 10 tonnes. Vehicles in this class run in long-haul and heavy-duty transport behind suitably approved towing vehicles and are built for sustained loads rather than occasional use.
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The 1989 TA 12-21 has an unladen weight of 26,020 kg and, at a gross vehicle weight of 33,000 kg, reaches a payload of 6,980 kg. At 1,198 mm, and with six wheels, the register value is too short to be the trailer's own wheelbase — it is the spacing between axles within an axle group, as found on tandem or tridem arrangements.
Trailers in this weight class run with air brakes as standard, since EU rules no longer permit an overrun brake above 10 tonnes. Towing vehicle and trailer form a single braking unit matched to the combined train weight; such a combination is driven with a category CE licence.
Anyone buying a trailer of this age should check the frame for rust and past accident damage, especially around the axle mountings. Brake lines, brake cylinders and the connection to the towing vehicle need a function check, and the tyres should be judged on age rather than tread alone. Lighting, number-plate mount and underrun guard should also be complete and undamaged.
Sources: SpecCodex-Register: Kennwerte des Modells TA 12-21
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