What risk is a rigid vehicle with trailer or a semi-trailer truck expected to face while driving on a slippery roadway?

1. On a slippery road all vehicles are at risk, and a connected vehicle or a semi-trailer truck is not special in this sense.
2. Correct answer: The vehicle can skid into a “jack-knife” position, in which a large angle is formed between the trailer and the towing vehicle,
3. Loss of engine power due to the slippage of a long vehicle.
4. That the deceleration brake stops functioning.

WhyOn a slippery road the trailer may skid and the vehicle may jack-knife, forming a sharp angle between the trailer and the towing vehicle.