Whenever necessary | |
Never | |
When the road is slippery | |
When driving on a grade |
The dolly tow bar will flip up | |
Nothing | |
The trailers will decouple | |
It will collapse |
Another name for rearward amplification is the crack-the-whip effect | |
The more trailers you`re pulling the larger the effect | |
The longer the trailers you`re pulling the larger the effect | |
The rearmost trailer is the most affected |