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Regularity Trials are a variation of the rules for Historic competition to allow those who are unwilling to race to run their vehicles for the enjoyment of themselves and the spectators. It is a competition being a trial of regularity; it is not a speed event. As such, it is exempted from some of the requirements of race competition. The continuing existence of regularity trials relies upon the exercise of common-sense, and, more particularly, good judgement on the part of the organisers in accepting or rejecting entries for specific events. Gross variations in potential speed are not condoned, and lap times close to racing lap times for specific vehicles are also unacceptable.

* Please note Historic Winton 'Regularity' Group caters primarily for pre-WW2 cars.

Ja & Jb Vintage Cars Ka and Kb Post-Vintage Lb sports & racing cars M racing & sports racing Nb Production Touring Cars Nc Production Touring Cars O Racing & Sports Racing Cars Formula 5000 Q Racing & Sports Sa Production Sports Cars Sb Production Sports Cars Regularity