Speed limit parameter set to 40 km/h; changes require manufacturer software and security codes.
In Scandinavian languages (especially Swedish and Norwegian), “traktor strypning” translates to or “tractor derestriction” — typically referring to the legal and mechanical process of limiting (or removing limits on) a tractor’s maximum speed, engine power, or hydraulic flow.
Locking out higher gears (e.g., preventing engagement of 4th and 5th gear).
It sounds like you are asking for a (i.e., a detailed guide, academic report, or technical document) on “traktor strypning.”