When should the speed control (cruise control) be used?

Using speed control (cruise control) is most effective when traffic conditions permit maintaining a constant speed without the need for constant adjustments. This typically means you can use it safely during steady traffic and on open roads where there are no frequent stops or changes in speed due to traffic signals or congestion.

While it's true that cruise control can assist in managing speed on inclines or declines, it is not limited to these conditions. It can also be beneficial at higher speeds on highways, but the main consideration should always be whether the traffic conditions allow for a constant speed. Understanding when and how to use cruise control properly can enhance safety by reducing driver fatigue and allowing for more focused driving. Hence, it is important to consider all relevant options when using cruise control.