To engage Traffic-Aware Cruise Control, press the right scroll wheel, then release the accelerator pedal to allow Traffic-Aware Cruise Control to maintain the cruising speed.

You can apply the accelerator at any time to temporarily override the set cruising speed.

Alternatively, if Autopilot Activation is set to Single Click, pressing the right scroll wheel once also activates Autosteer, which includes Traffic-Aware Cruise Control.