Why should sudden acceleration or braking be avoided when driving Doubles/Triples?

Sudden acceleration or braking should be avoided when driving doubles or triples primarily because it maintains stability and control of the trailers. These types of configurations are longer and heavier than single trailers, which can make them more susceptible to swaying, jackknifing, or tipping over when abrupt changes in speed occur. Smooth acceleration and braking help ensure that the entire rig remains balanced and prevent the trailers from becoming unstable.

When a driver accelerates or brakes suddenly, the momentum of the trailers can cause them to push or pull on the vehicle, leading to potential loss of control. By avoiding sudden movements, a driver can maintain better handling of the rig, improve safety for themselves and others on the road, and reduce the risk of accidents. This is especially true on slippery or uneven surfaces, where sudden movements can exacerbate control issues.