Honda E Manual page 452

When driving slower than about 30 km/h (18 mph):
If the vehicle is moving and the brake pedal is not depressed, pressing the button
fixes the set speed to
30 km/h (18 mph) regardless of current vehicle speed. If your vehicle is stationary,
you can set the vehicle speed even with the brake pedal depressed.
Set Vehicle Speed (white)
a
Setting Status (green)
b
When ACC with Low Speed Follow starts
operating, set speed appear (green) on the
gauge.
uuHonda SensinguAdaptive Cruise Control (ACC) with Low Speed Follow
Continued 451