Does Vehicle Motion Cues Activate Automatically in iOS 18?

Apple introduced Vehicle Motion Cues in iOS 18 to help reduce motion sickness for passengers using iPhones in moving vehicles. When set to Automatic, the feature uses the device's built-in motion sensors to detect when you are in a moving vehicle and displays subtle animated dots along the screen edges without requiring manual activation.

How Vehicle Motion Cues Detects Movement

Vehicle Motion Cues relies on the iPhone's integrated sensors, primarily the accelerometer and gyroscope. These sensors continuously measure acceleration, directional shifts, and inertial forces. When the system identifies movement patterns typical of a car, bus, or train, it initiates the cue animations automatically.

Once the vehicle comes to a complete stop or you exit the vehicle, the sensors detect the cessation of travel motion, and the on-screen dots disappear automatically to avoid unnecessary visual distraction.

How the Visual Cues Work

Motion sickness typically occurs when there is a sensory conflict between what a person sees and what their inner ear feels. When you look at a static screen inside a moving car, your eyes perceive stillness while your vestibular system senses motion.

Vehicle Motion Cues counters this by displaying animated dots on the edges of the display:

  • Accelerating: The dots move toward the bottom of the screen.
  • Braking: The dots move toward the top of the screen.
  • Turning: The dots shift horizontally opposite the turn direction.

These animations align visual input with physical motion without obstructing the primary content on your screen.

How to Set Vehicle Motion Cues to Automatic

While the feature can be toggled manually, enabling automatic detection ensures it only runs when needed:

  1. Open the Settings app on your iPhone running iOS 18.
  2. Select Accessibility.
  3. Tap Motion.
  4. Tap Vehicle Motion Cues.
  5. Select Automatic.

You can also add the Vehicle Motion Cues control to the iOS 18 Control Center for quick adjustments between Automatic, On, and Off.