The direction the vehicle is moving is displayed while the vehicle is being driven.

Cruise Control Set Vehicle Speed Display (Some models)
Warning (Display Indication)Mazda 6 Owners Manual: Traffic Sign Display Indication
The following traffic signs are displayed on the active driving display.
Speed limit signs
Do not enter signs
Stop signs
The above indications are some examples.
NOTE
Speed limit signs
When the vehicle speed is about 1 km/h (0.6 mph) or faster, the speed
limit sign is displayed wh ...
Mazda 6 Owners Manual: To Increase Cruising Speed
Follow either of these procedures.
To increase speed using cruise control switch
Press the RESUME/ switch and hold
it. Your vehicle will accelerate. Release the switch at the desired speed.
Press the RESUME/ switch and release
it immediately to adjust the preset speed. Multiple operations wil ...