Driving and similar settings must not require visual confirmation
Aliases: in-car voice · eyes on road · confirmation ban
What it is
In driving, some industrial operations, and any setting where vision must stay locked on the environment, a voice flow must not make looking at a screen a required step. This is not “try to glance less.” If confirmation can only be completed by reading a transcript or tapping a dialog, that command should not exist in the setting. Time with eyes off the road is crash risk; “users can choose not to look” does not excuse it.
Why it happens
Driving is a mandatory visual tracking task; peripheral vision is not enough to read. Transcripts, lists, and “send?” buttons on a centre display demand a gaze shift and a point. Even a correctly recognized command still creates an off-road glance if a confirm dialog appears. Auditory menus, confirm/cancel on a wheel control, and default execution after a short read-back keep the decision in hearing and a finger press. Regulation and industrial guidance independently limit visual demand in vehicles; a desktop habit of “when unsure, pop a dialog” cannot be loaded into the car. Compared with “looking cancels eyes-free value,” this adds a non-negotiable safety constraint: cancelled value is already unacceptable, and requiring a look fails the setting outright.
Studying it
In a simulator or closed course, measure eyes-off-road duration and count, lane keeping, and headway from command onset to completion. Compare must-tap confirm, default execution after audible read-back, and wheel-button confirm. Include destination changes, calls, and replies—the tasks that actually spawn confirms. Stationary tap-throughs in a parked lab do not represent moving driving.
Where it stops holding
Parked, in gear P, or when a passenger uses the centre display, the ban on visual confirm weakens, but the default should still be designed for motion so the mode does not flip to “must look” while rolling. Jurisdictions differ on in-car display limits; one market’s number is not a law of physics. Visual warnings in emergencies (collision alerts) are not voice confirmation. Long auditory menus also consume attention; forbidding a required look is not a licence to read endless lists.
Applying it
- From the list of voice commands allowed in motion, remove any step that must be read or tapped to take effect; move high-risk actions to a wheel confirm or to after stopping.
- Read back contacts and addresses and confirm with a key, rather than popping a tappable list on the centre display.
- Accept with a simulator on off-road time; any gaze produced by a confirm dialog takes that command out of the moving state.