YEONGAM, South Korea (AP) — Ferrari has slammed next year's proposed Formula One calendar, saying the schedule is "almost impossible" and has urged authorities to reduce the number of races by at least two.

Ferrari team manager Massimo Rivola said the mid-season sequence of Monaco, New Jersey and Montreal — with only one week's break between each — would cause a major logistical headache.

The draft calendar for next year includes 22 races, though South Korea, New Jersey and Mexico are listed as provisional. Rivola said it should be cut back to 20 in line with the previously agreed limit.

As well as additional races, next year will see the re-introduction of in-season testing, stretching teams' staffing levels and cost control.